Release/v0.2.2

[brianneisler]

• Update API docs
• Break AST parser out into separate module called firetree
• Bump node-notifier from 8.0.0 to 8.0.1
• Add .opensource. Install firetree.
• Bump node-fetch from 2.6.0 to 2.6.1

[codecov]

Codecov Report

Merging #32 (01bf43b) into master (42b32ea) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 01bf43b differs from pull request most recent head 6cb7fcc. Consider uploading reports for the commit 6cb7fcc to get more accurate results

@@           Coverage Diff           @@
##           master      #32   +/-   ##
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  Coverage   85.85%   85.85%           
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  Files          22       22           
  Lines         205      205           
  Branches       39       39           
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  Hits          176      176           
  Misses         28       28           
  Partials        1        1