v0.3.2

Changelog

f5a48d1 Split out cli code and add version flag
1896c75 housekeeping: update go.mod and fix smoke test
f4ae3f1 Use global porcelain if there is one
3b1386e Fix work tree detection
f4806c2 Add powerline font notice to README.md (#6)
d1a9937 Add tmux plugin for tpm
ee906b8 Use platform name 'darwin' for macOS builds