fix make clean hs
better fix for make clean hs
Merge branch 'master' of github.com:Fab7c4/cletus
skeleton code talking to piksi

(requires a missing libswiftnav, including headers)
added libswiftnav as a submodule
add libswiftnav build instructions
add python protobuf generation
add log plotter
Merge branch 'master' of https://github.com/ghorn/cletus

Conflicts:
	messages.proto