Gource creates a large ppm file as an intermediary step in its animation. Git has lots of trouble with that file so we want to ignore it entirely.

Adds filtering out old entries and filtering out messy filepaths (e.g. accidentally committed node_modules)

Add a script which lists the unique authors in the combined `gource.log`
to facilitate filling out `aliases` in the `config.json`

Using `with` will close the file after it's read.

I no longer use Twitter, so I'd prefer to direct traffic to LinkedIn where I am more active.

People don't always use the same git `user.name` for their commit
messages.

This feature adds an `aliases` config settings a desired author name can
be associated with multiple commit author names. Whenever the commit
author name is discovered in the Gource log, it will be converted to the
alias before being rendered in the visualization.

Adds a config option to list repositories to exclude from the animation.

Use it to remove clutter so the animation can focus on repositories of
interest.

Scan all cloned repositories, then concatenate their logs into a single
visualization.