docs: add a Task "state" transition diagram to Code Notes

This shows the Task "states" (estop & machine on/off) and how state-change
messages cause Task to move between the states.

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
teach the build scripts to be more accepting of release branch names

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
Pre-release v2.7.0~pre1

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
Pre-release: 2.8.0~pre0

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
oops, bump the master tag glob

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
Merge branch '2.7'

Conflicts:
	VERSION
	debian/changelog