[ref] External halpy lib
[fix] Bad submodule
[fix] Use git://
[fix] URL + use https ?
[ref] Move arduino library to external repo
Merge branch 'master' into split-projects

Conflicts:
	.gitmodules
	arduino/lib/hal
[ref] Move driver to external repo
[update] Submodules
[add] Send event to lechbot when someone rings the bell