Annotation: Rectangles
Merge remote-tracking branch 'broele/annotation_rectangles'

Conflicts:
	src/matlab2tikz.m
ACID test should run `distclean`

The normal `make clean` only removes compilation artefacts from LaTeX while
we need to remove interpretation artefacts from `matlab2tikz` before running
our tests. This is done using `make distclean`.
Merge branch 'distclean-tests'