Add eyre for simple backtrace reporting

Add eyre for simple backtrace reporting. Since gfold relies on speed and
efficiency, and sports a relatively small codebase, eyre provides a
simple backtrace report when an error is encountered. Specifically, the
filename and line are the most important parts.
Unrelated, add a cargo doc command to the release Make target.
Adjust existing docs comments to match style.
Change some private definitions to be public.

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 7381ef0..dd67037 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ authors = ["Nick Gerace <nickagerace@gmail.com>"]
 edition = "2018"

 

 [dependencies]

+eyre = "0.6"

 structopt = "0.3"

 git2 = "0.13"

 prettytable-rs = "0.8"