v0.5.1

Bugfixes:

• Don't use $SHELL to execute commands, but always use /bin/sh
• env vars have not been checked when "build" was set to false
• global env vars have not been passed to build sub-command

v0.5

All command now implemented (a bit unstable, though)

• generate
• template
• build
• push
• deploy
• check

v0.4

Trying to publish to production pypi via this release/tag