Trimming down and generating docs

v0.3.0 - 5/27/2020

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• Change version numbers to be semantic versioning compliant
• Changed to using cmdliner for command line parsing
• Cut down on some large dependencies
• Generate manpage on install

v0.2

There are more configurations now

• FIX: Fixed issue where caching wasn't occurring when hitting remote
• ADD: Add color configuration through environment variables

V0.1

Initial release of tldr

• Individual caching of pages
• Colorful display
• Configuration through environment variables