sq: add scaffolding for an integration/acceptance test suite

Add support for an integration and acceptance test suite using the
Subplot tool (https://subplot.liw.fi/). There are the initial, very
simple test scenarios, to get us started. The goal is to introduce the
scaffolding for integration tests, so that further tests can be added
with ease later.

The tests are documented and defined in sq-subplot.md. In build.rs, we
call Subplot to generate test code from the markdown file. The tests
are run via "cargo test", as usual.

Subplot can also generate a typeset test document from sq-subplot.md,
but we don't do that here.

9 files changed, 1404 insertions, 367 deletions

diff --git a/.gitignore b/.gitignore
index d11a7d36..13cef60b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@
 .gdb_history
 .dir-locals.el
 Makefile
+sq/*.html
+sq/*.pdf
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8bef5ac2..146ad9a8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@ build-bullseye:
   script:
     - cargo run --manifest-path openpgp/Cargo.toml --no-default-features --features crypto-nettle,compression --example supported-algorithms
     - $MAKE_TOP
-    - if ! git diff --quiet Cargo.lock ; then echo "Cargo.lock changed.  Please add the change to the corresponding commit." ; false ; fi
+    - if ! git diff --quiet Cargo.lock ; then echo "Cargo.lock changed.  Please add the change to the corresponding commit." ; git diff ; false ; fi
     - if ! git diff --quiet sq ; then echo "Please commit the changes to sq/src/sq-usage.rs." ; false ; fi
     - if ! git diff --quiet ; then echo "The build changed the source.  Please investigate." ; git diff ; fi
   variables:
diff --git a/Cargo.lock b/Cargo.lock
index f95b61f1..9c04d915 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,9 +2,9 @@
 # It is not intended for manual editing.
 [[package]]
 name = "addr2line"
-version = "0.14.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a55f82cfe485775d02112886f4169bde0c5894d75e79ead7eafe7e40a25e45f7"
+checksum = "3e61f2b7f93d2c7d2b08263acaa4a363b3e276806c68af6134c44f523bf1aacd"
 dependencies = [
  "gimli",
 ]
@@ -63,9 +63,9 @@ checksum = "739f4a8db6605981345c5654f3a85b056ce52f37a39d34da03f25bf2151ea16e"
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.15"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
 dependencies = [
  "memchr",
 ]
@@ -80,28 +80,25 @@ dependencies = [
 ]
 
 [[package]]
-name = "anyhow"
-version = "1.0.40"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28b2cd92db5cbd74e8e5028f7e27dd7aa3090e89e4f2a197cc7c8dfb69c7063b"
-
-[[package]]
-name = "arrayref"
-version = "0.3.6"
+name = "ansi_term"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi 0.3.9",
+]
 
 [[package]]
-name = "arrayvec"
-version = "0.5.2"
+name = "anyhow"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+checksum = "61604a8f862e1d5c3229fdd78f8b02c68dcf73a4c4b05fd636d12240aaa242c1"
 
 [[package]]
 name = "ascii-canvas"
-version = "2.0.0"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff8eb72df928aafb99fe5d37b383f2fe25bd2a765e3e5f7c365916b6f2463a29"
+checksum = "8824ecca2e851cec16968d54a01dd372ef8f95b244fb84b84e70128be347c3c6"
 dependencies = [
  "term",
 ]
@@ -145,11 +142,12 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "backtrace"
-version = "0.3.56"
+version = "0.3.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d117600f438b1707d4e4ae15d3595657288f8235a0eb593e80ecc98ab34e1bc"
+checksum = "091bcdf2da9950f96aa522681ce805e6857f6ca8df73833d35736ab2dc78e152"
 dependencies = [
  "addr2line",
+ "cc",
  "cfg-if 1.0.0",
  "libc",
  "miniz_oxide",
@@ -199,9 +197,9 @@ checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitvec"
@@ -216,17 +214,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "blake2b_simd"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587"
-dependencies = [
- "arrayref",
- "arrayvec",
- "constant_time_eq",
-]
-
-[[package]]
 name = "block-buffer"
 version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -285,9 +272,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.15"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a40b47ad93e1a5404e6c18dec46b628214fee441c70f4ab5d6942142cc268a3d"
+checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
 dependencies = [
  "lazy_static",
  "memchr",
@@ -306,9 +293,9 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.6.1"
+version = "3.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63396b8a4b9de3f4fdfb320ab6080762242f66a8ef174c49d8e19b674db4cdbe"
+checksum = "8f1e260c3a9040a7c19a12468758f4c16f31a81a1fe087482be9570ec864bb6c"
 
 [[package]]
 name = "byte-tools"
@@ -330,15 +317,15 @@ checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
 
 [[package]]
 name = "bytes"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
 [[package]]
 name = "bzip2"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abf8012c8a15d5df745fcf258d93e6149dcf102882c8d8702d9cff778eab43a8"
+checksum = "6afcd980b5f3a45017c57e57a2fcccbb351cc43a356ce117ef760ef8052b89b0"
 dependencies = [
  "bzip2-sys",
  "libc",
@@ -346,9 +333,9 @@ dependencies = [
 
 [[package]]
 name = "bzip2-sys"
-version = "0.1.10+1.0.8"
+version = "0.1.11+1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17fa3d1ac1ca21c5c4e36a97f3c3eb25084576f6fc47bf0139c1123434216c6c"
+checksum = "736a955f3fa7875102d57c82b8cac37ec45224a07fd32d58f9f7a186b6cd4cdc"
 dependencies = [
  "cc",
  "libc",
@@ -393,9 +380,9 @@ dependencies = [
 
 [[package]]
 name = "cast"
-version = "0.2.3"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b9434b9a5aa1450faa3f9cb14ea0e8c53bb5d2b3c1bfd1ab4fc03e9f33fbfb0"
+checksum = "4c24dab4283a142afa2fdca129b80ad2c6284e073930f964c3a1293c225ee39a"
 dependencies = [
  "rustc_version",
 ]
@@ -413,9 +400,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.67"
+version = "1.0.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3c69b077ad434294d3ce9f1f6143a2a4b89a8a2d54ef813d85003a4fd1137fd"
+checksum = "79c2681d6594606957bbb8631c4b90a7fcaaa72cdb714743a437b156d6a7eedd"
 
 [[package]]
 name = "cexpr"
@@ -452,6 +439,28 @@ dependencies = [
 ]
 
 [[package]]
+name = "chrono-tz"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64c01c1c607d25c71bbaa67c113d6c6b36c434744b4fd66691d711b5b1bc0c8b"
+dependencies = [
+ "chrono",
+ "chrono-tz-build",
+ "phf",
+]
+
+[[package]]
+name = "chrono-tz-build"
+version = "0.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db058d493fb2f65f41861bfed7e3fe6335264a9f0f92710cab5bdf01fef09069"
+dependencies = [
+ "parse-zoneinfo",
+ "phf",
+ "phf_codegen",
+]
+
+[[package]]
 name = "cipher"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -462,9 +471,9 @@ dependencies = [
 
 [[package]]
 name = "clang-sys"
-version = "1.1.1"
+version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f54d78e30b388d4815220c8dd03fea5656b6c6d32adb59e89061552a102f8da1"
+checksum = "10612c0ec0e0a1ff0e97980647cb058a6e7aedb913d01d009c406b8b7d0b26ee"
 dependencies = [
  "glob",
  "libc",
@@ -477,7 +486,7 @@ version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
- "ansi_term",
+ "ansi_term 0.11.0",
  "atty",
  "bitflags",
  "strsim",
@@ -493,7 +502,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73d4de4f7724e5fe70addfb2bd37c2abd2f95084a429d7773b0b9645499b4272"
 dependencies = [
- "crypto-mac 0.10.0",
+ "crypto-mac 0.10.1",
  "dbl",
 ]
 
@@ -515,16 +524,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "279bc8fc53f788a75c7804af68237d1fce02cde1e275a886a4b320604dc2aeda"
 
 [[package]]
-name = "constant_time_eq"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
-
-[[package]]
 name = "core-foundation"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a89e2ae426ea83155dccf10c0fa6b1463ef6d5fcb44cee0b224a408fa640a62"
+checksum = "6888e10551bb93e424d8df1d07f1a8b4fceb0001a3a4b048bfc47554946f47b3"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -532,9 +535,9 @@ dependencies = [
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
+checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
 
 [[package]]
 name = "cpufeatures"
@@ -546,12 +549,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "cpuid-bool"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
-
-[[package]]
 name = "crc32fast"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -562,16 +559,16 @@ dependencies = [
 
 [[package]]
 name = "criterion"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab327ed7354547cc2ef43cbe20ef68b988e70b4b593cbd66a2a61733123a3d23"
+checksum = "1604dafd25fba2fe2d5895a9da139f8dc9b319a5fe5354ca137cbbce4e178d10"
 dependencies = [
  "atty",
  "cast",
  "clap",
  "criterion-plot",
  "csv",
- "itertools 0.10.0",
+ "itertools 0.10.1",
  "lazy_static",
  "num-traits",
  "oorandom",
@@ -588,19 +585,19 @@ dependencies = [
 
 [[package]]
 name = "criterion-plot"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e022feadec601fba1649cfa83586381a4ad31c6bf3a9ab7d408118b05dd9889d"
+checksum = "d00996de9f2f7559f7f4dc286073197f83e92256a59ed395f9aac01fe717da57"
 dependencies = [
  "cast",
- "itertools 0.9.0",
+ "itertools 0.10.1",
 ]
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dca26ee1f8d361640700bde38b2c37d8c22b3ce2d360e1fc1c74ea4b0aa7d775"
+checksum = "06ed27e177f16d65f0f0c22a213e17c696ace5dd64b14258b52f9417ccb52db4"
 dependencies = [
  "cfg-if 1.0.0",
  "crossbeam-utils",
@@ -619,9 +616,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.3"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2584f639eb95fea8c798496315b297cf81b9b58b6d30ab066a75455333cf4b12"
+checksum = "4ec02e091aa634e2c3ada4a392989e7c3116673ef0ac5b72232439094d73b7fd"
 dependencies = [
  "cfg-if 1.0.0",
  "crossbeam-utils",
@@ -632,11 +629,10 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.3"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
+checksum = "d82cfc11ce7f2c3faef78d8a684447b40d503d9681acebed6cb728d45940c4db"
 dependencies = [
- "autocfg 1.0.1",
  "cfg-if 1.0.0",
  "lazy_static",
 ]
@@ -649,9 +645,9 @@ checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
 
 [[package]]
 name = "crypto-mac"
-version = "0.10.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4857fd85a0c34b3c3297875b747c1e02e06b6a0ea32dd892d8192b9ce0813ea6"
+checksum = "bff07008ec701e8028e2ceb8f83f0e4274ee62bd2dbdc4fefff2e9a91824081a"
 dependencies = [
  "cipher",
  "generic-array 0.14.4",
@@ -692,9 +688,9 @@ dependencies = [
 
 [[package]]
 name = "ctor"
-version = "0.1.20"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e98e2ad1a782e33928b96fc3948e7c355e5af34ba4de7670fe8bac2a3b2006d"
+checksum = "ccc0a48a9b826acdf4028595adc9db92caea352f7af011a3034acd172a52a0aa"
 dependencies = [
  "quote",
  "syn",
@@ -711,9 +707,9 @@ dependencies = [
 
 [[package]]
 name = "curve25519-dalek"
-version = "3.0.2"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f627126b946c25a4638eec0ea634fc52506dea98db118aae985118ce7c3d723f"
+checksum = "0b9fdf9972b2bd6af2d913799d9ebc165ea4d2e65878e329d9c6b372c4491b61"
 dependencies = [
  "byteorder",
  "digest 0.9.0",
@@ -753,6 +749,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "deunicode"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "850878694b7933ca4c9569d30a34b55031b9b139ee1fc7b94a527c4ef960d690"
+
+[[package]]
 name = "diff"
 version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -784,30 +786,40 @@ dependencies = [
 
 [[package]]
 name = "dirs"
-version = "1.0.5"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
+checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
 dependencies = [
- "libc",
- "redox_users",
- "winapi 0.3.9",
+ "cfg-if 0.1.10",
+ "dirs-sys",
 ]
 
 [[package]]
-name = "dirs"
-version = "2.0.2"
+name = "dirs-next"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
 dependencies = [
- "cfg-if 0.1.10",
- "dirs-sys",
+ "cfg-if 1.0.0",
+ "dirs-sys-next",
 ]
 
 [[package]]
 name = "dirs-sys"
-version = "0.3.5"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03d86534ed367a67548dc68113a0f5db55432fdfbb6e6f9d77704397d95d5780"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e93d7f5705de3e49895a2b5e0b8855a1c27f080192ae9c32a6432d50741a57a"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
 dependencies = [
  "libc",
  "redox_users",
@@ -821,6 +833,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
 [[package]]
+name = "dtoa"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
+
+[[package]]
 name = "dyn-clone"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -853,9 +871,9 @@ dependencies = [
 
 [[package]]
 name = "ed25519"
-version = "1.0.3"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37c66a534cbb46ab4ea03477eae19d5c22c01da8258030280b7bd9d8433fb6ef"
+checksum = "4620d40f6d2601794401d6dd95a5cf69b6c157852539470eeda433a99b3c0efc"
 dependencies = [
  "signature",
 ]
@@ -869,7 +887,7 @@ dependencies = [
  "curve25519-dalek",
  "ed25519",
  "rand 0.7.3",
- "sha2 0.9.3",
+ "sha2 0.9.8",
  "zeroize",
 ]
 
@@ -890,7 +908,7 @@ dependencies = [
  "generic-array 0.14.4",
  "group",
  "pkcs8",
- "rand_core 0.6.2",
+ "rand_core 0.6.3",
  "subtle",
  "zeroize",
 ]
@@ -951,25 +969,51 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
 
 [[package]]
+name = "fehler"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5729fe49ba028cd550747b6e62cd3d841beccab5390aa398538c31a2d983635"
+dependencies = [
+ "fehler-macros",
+]
+
+[[package]]
+name = "fehler-macros"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccb5acb1045ebbfa222e2c50679e392a71dd77030b78fb0189f2d9c5974400f9"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
 name = "ff"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72a4d941a5b7c2a75222e2d44fcdf634a67133d9db31e177ae5ff6ecda852bfe"
 dependencies = [
  "bitvec",
- "rand_core 0.6.2",
+ "rand_core 0.6.3",
  "subtle",
 ]
 
 [[package]]
+name = "file_diff"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31a7a908b8f32538a2143e59a6e4e2508988832d5d4d6f7c156b3cbc762643a5"
+
+[[package]]
 name = "filetime"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d34cfa13a63ae058bfa601fe9e313bbdb3746427c1459185464ce0fcf62e1e8"
+checksum = "975ccf83d8d9d0d84682850a38c8169027be83368805971cc4f238c2b245bc98"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "redox_syscall 0.2.5",
+ "redox_syscall",
  "winapi 0.3.9",
 ]
 
@@ -981,9 +1025,9 @@ checksum = "37ab347416e802de484e4d03c7316c48f1ecb56574dfd4a46a80f173ce1de04d"
 
 [[package]]
 name = "flate2"
-version = "1.0.20"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd3aec53de10fe96d7d8c565eb17f2c687bb5518a2ec453b5b1252964526abe0"
+checksum = "1e6988e897c1c9c485f43b47a529cef42fde0547f9d8d41a7062518f1d8fc53f"
 dependencies = [
  "cfg-if 1.0.0",
  "crc32fast",
@@ -1056,9 +1100,9 @@ checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
 
 [[package]]
 name = "futures"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f55667319111d593ba876406af7c409c0ebb44dc4be6132a783ccf163ea14c1"
+checksum = "a12aa0eb539080d55c3f2d45a67c3b58b6b0773c1a3ca2dfec66d58c97fd66ca"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -1071,9 +1115,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c2dd2df839b57db9ab69c2c9d8f3e8c81984781937fe2807dc6dcf3b2ad2939"
+checksum = "5da6ba8c3bb3c165d3c7319fc1cc8304facf1fb8db99c5de877183c08a273888"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -1081,15 +1125,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15496a72fabf0e62bdc3df11a59a3787429221dd0710ba8ef163d6f7a9112c94"
+checksum = "88d1c26957f23603395cd326b0ffe64124b818f4449552f960d815cfba83a53d"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891a4b7b96d84d5940084b2a37632dd65deeae662c114ceaa2c879629c9c0ad1"
+checksum = "45025be030969d763025784f7f355043dc6bc74093e4ecc5000ca4dc50d8745c"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -1098,16 +1142,17 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71c2c65c57704c32f5241c1223167c2c3294fd34ac020c807ddbe6db287ba59"
+checksum = "522de2a0fe3e380f1bc577ba0474108faf3f6b18321dbf60b3b9c39a75073377"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea405816a5139fb39af82c2beb921d52143f556038378d6db21183a5c37fbfb7"
+checksum = "18e4a4b95cea4b4ccbcf1c5675ca7c4ee4e9e75eb79944d07defde18068f79bb"
 dependencies = [
+ "autocfg 1.0.1",
  "proc-macro-hack",
  "proc-macro2",
  "quote",
@@ -1116,22 +1161,23 @@ dependencies = [
 
 [[package]]
 name = "futures-sink"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85754d98985841b7d4f5e8e6fbfa4a4ac847916893ec511a2917ccd8525b8bb3"
+checksum = "36ea153c13024fe480590b3e3d4cad89a0cfacecc24577b68f86c6ced9c2bc11"
 
 [[package]]
 name = "futures-task"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa189ef211c15ee602667a6fcfe1c1fd9e07d42250d2156382820fba33c9df80"
+checksum = "1d3d00f4eddb73e498a54394f228cd55853bdf059259e8e7bc6e69d408892e99"
 
 [[package]]
 name = "futures-util"
-version = "0.3.13"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1812c7ab8aedf8d6f2701a43e1243acdbcc2b36ab26e2ad421eb99ac963d96d1"
+checksum = "36568465210a3a6ee45e1f165136d68671471a501e632e9a98d96872222b5481"
 dependencies = [
+ "autocfg 1.0.1",
  "futures-channel",
  "futures-core",
  "futures-io",
@@ -1139,7 +1185,7 @@ dependencies = [
  "futures-sink",
  "futures-task",
  "memchr",
- "pin-project-lite 0.2.6",
+ "pin-project-lite 0.2.7",
  "pin-utils",
  "proc-macro-hack",
  "proc-macro-nested",
@@ -1166,6 +1212,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "getopts"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14dbbfd5c71d70241ecf9e6f13737f7b5ce823821063188d7e46c41d371eebd5"
+dependencies = [
+ "unicode-width",
+]
+
+[[package]]
 name = "getrandom"
 version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1178,9 +1233,9 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
@@ -1189,9 +1244,32 @@ dependencies = [
 
 [[package]]
 name = "gimli"
-version = "0.23.0"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0a01e0497841a3b2db4f8afa483cce65f7e96a3498bd6c541734792aeac8fe7"
+
+[[package]]
+name = "git-testament"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "096cb9c8aa6f1924d079bf417f1d1685286958ff362fa58ae4d65a53ffec6c02"
+dependencies = [
+ "git-testament-derive",
+ "no-std-compat",
+]
+
+[[package]]
+name = "git-testament-derive"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
+checksum = "45ceded7b01141664c3fc4a50199c408a6ed247e6c8415dc005e895f1d233374"
+dependencies = [
+ "chrono",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
 
 [[package]]
 name = "glob"
@@ -1200,23 +1278,47 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
 [[package]]
+name = "globset"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10463d9ff00a2a068db14231982f5132edebad0d7660cd956a1c30292dbcbfbd"
+dependencies = [
+ "aho-corasick",
+ "bstr",
+ "fnv",
+ "log",
+ "regex",
+]
+
+[[package]]
+name = "globwalk"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93e3af942408868f6934a7b85134a3230832b9977cf66125df2f9edcfce4ddcc"
+dependencies = [
+ "bitflags",
+ "ignore",
+ "walkdir",
+]
+
+[[package]]
 name = "group"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61b3c1e8b4f1ca07e6605ea1be903a5f6956aec5c8a67fd44d56076631675ed8"
 dependencies = [
  "ff",
- "rand_core 0.6.2",
+ "rand_core 0.6.3",
  "subtle",
 ]
 
 [[package]]
 name = "h2"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c06815895acec637cd6ed6e9662c935b866d20a106f8361892893a7d9234964"
+checksum = "7fd819562fcebdac5afc5c113c3ec36f902840b70fd4fc458799c8ce4607ae55"
 dependencies = [
- "bytes 1.0.1",
+ "bytes 1.1.0",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -1231,9 +1333,9 @@ dependencies = [
 
 [[package]]
 name = "half"
-version = "1.7.1"
+version = "1.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62aca2aba2d62b4a7f5b33f3712cb1b0692779a56fb510499d5c0aa594daeaf3"
+checksum = "eabb4a44450da02c90444cf74558da904edde8fb4e9035a9a6a4e15445af0bd7"
 
 [[package]]