[FEATURE] specify output field delimiter (#8)

Add output_field_separator option

Add output_field_separator tests

Change structopt req to 0.3

Separate negative choices into a function

Prevent tail printing output_field_separator

Change OFS to Option<String> with a default value of " "

Reorder arguments to write_bytes to parallel print_choice

Print output_separator in main loop if applicable

Add `cargo test` to Makefile

Add write_separator function

1 files changed, 1 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index a82e711..85dfdc7 100644
--- a/Makefile
+++ b/Makefile
@@ -8,6 +8,7 @@ flamegraph_commit: release-debug
 
 .PHONY: test
 test:
+	cargo test
 	test/e2e_test.sh
 
 bench: release