Fix typo: gm -> gmt

Add decorate and color to the normal oneline and add a new alias for graph oneline logs.

add command to ignore changes to file temporarily

I noticed that the function ``work_in_progress``, which is used in the "gallois"-theme, would print ``fatal: bad default revision 'HEAD'`` in a new folder after ``git init``.

This is the fix.

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>

For the lazy and forgetful. Don't worry, a bang is fine in an alias and completion.

Added check for .git directory in current, before wasting time querying git. This saves seconds on my pc.

Allows to view commit history in extended way

Instead of git fetch && git rebase.