v0.4 - TOML + new themes

• Migrate to TOML
• add a helper script convert_to_toml.sh to convert the YAML themes to YAML (ability to convert a single file, or batch convert all files in your themes/)

0.2

Get rid of git-lfs due to problems with displaying images on github.

Version 0.1

Closes Issue #1
Shell script to easily apply themes.