Simplified the multispec task and added RSpec 3.1.0.
Merge branch 'master' of git:rpicsim
Added and documented a new flaw entry: writing_tris_affects_output
We knew about this flaw before, and it was fixed in MPLAB X v2.15.
MPLAB X v2.15 has a better error message explaining why COF files need
to be inside a 'dist' directory.  Changed the specs to pass.
Updated the docs to say MPLAB X v2.15 is supported because all specs
pass on it now.
Updated the docs to say MPLAB X v2.20 is supported because all specs
pass on it now.
Added a note about v2.15 and v2.20 in the change log.
Fixed a typo in the previous commit.
After running specs, clean up MPLAB X log files.