v0.5.5 Version command, modified override command, code clean up and small bug fixes

Release notes:

• Code cleanup with json data parsing
• Make unknown infos in json default to empty instead of previous distro info
• Add --version and -v command
• Add ascii tests with --override command without argument
• Add thanks section in README.md
• Add resolution infos icon

Full Changelog: v0.5.3...v0.5.5

v0.5.3 Small *bsd fix

Release notes:

• Fix *BSD issue with getting distribution name

Full Changelog: v0.5.2...v0.5.3

v0.5.2 Configuration fully working!

Release notes:

• Add --info argument
• Code cleanup in src/color_config::get_color_config
• Small bug fix to make sure e.g. --override doesn't accept any --* arguments

Full Changelog: https://github.com/charklie/rsftch/commits/v0.5.2