Update dependencies due to dependabot warnings

Link to docs for gitp4transfer

Proper documentation for gitp4transfer

Add -unicode parameter. Improve help output

More case insensitive fixes

Ensure commit userID is copied to change

Check for case insensitive renames or modify on top of delete

Avoid filetype errors on renamed files

Handle rename of non-existant source file

Refactor comments

.gitignore for gitgraph

Working version of gitgraph with --squash

Fix gitfilter corruption of output

Refactor gitfilter and add basic test framework

New utility gitgraph