v0.2-pr.1

Changelog

541b704 Merge pull request #17 from urbanopt/16-feat/add-version-flag
687a7eb Merge pull request #19 from urbanopt/docs/build-notes
a6d8e4b Merge pull request #21 from urbanopt/refactor/mbl-misc-updates
c0e6007 Merge pull request #22 from urbanopt/chore/move-to-gh-actions
bf6ca31 chore: move from travis to github actions
1046dc0 chore: show multiple model annotations in gmt-building example
c34e347 feat: add flag to display version info
fbc4f9d fix: fix ci yml syntax
f87d07e refactor: indent on external function call args
0722bdd refactor: show usage when no args provided to cli