* The main feature of this commit is addressing the feature request
of adding the ability to save the output as a file to use in other
tools. I decided to use the JSON format as it's relatively straight
forward and easy to create thanks to a few Google searches.
The original feature request was to add the ability to output any of
the options as a JSON/XML/YAML format. That said, because this entire project
is relying only on built-in shell utilities, we kind of have to format stuff
ourselves in relatively primitive tools such as awk, sed, and bash in order
to adhere to the "spirit" of this codebase.
It is possible to use Perl and/or Python, but that would defeat the purpose
of this, in my opinion. The downside of not using these tools is that it
might not be as robust and battle hardened as the others.
AS SUCH, THIS FEATURE IS CURRENTLY EXPERIMENTAL.
As people provide feedback, we can adjust this and possibly extend it to
more options. For now, it respects _GIT_SINCE and _GIT_UNTIL. It does not
respect variable expansion in paths, though, so saving it to a location such
as "${my_save_location}" will fail.
* Made some of the variables a bit more robust by utilizing the -r flag to
make the variables readonly. It should be noted that "local readonly" does
not work, nor does "readonly local". The best way to do this is either via
"local -r foo=bar" or "local foo=bar && readonly bar".
* Fixed a few comments describing how functions work.
* Added a .gitignore.
* Changed all functions to adhere to camelCase style for no real reason
other than consistency and a few other minor things.
* Closes#31
