Display bandwidth in different unit families (#328)

* Allow selecting unit families

- Supported units are {binary,SI}-{bytes,bits}

* Fix typo

* Better error msg in the unreachable case

* - I can't believe I did this. Frankly, terrible.

* Add unit test

* Add peta&pebi units to be absolutely future-proof

* Minor code style improvement

1 files changed, 1 insertions, 0 deletions

diff --git a/src/display/ui.rs b/src/display/ui.rs
index 0b0882e..df0978f 100644
--- a/src/display/ui.rs
+++ b/src/display/ui.rs
@@ -32,6 +32,7 @@ where
         terminal.hide_cursor().unwrap();
         let state = {
             let mut state = UIState::default();
+            state.unit_family = opts.unit_family;
             state.cumulative_mode = opts.total_utilization;
             state
         };