DOC: Fold user's guide source at 80 char width
Convert [Baier, 2008] to link to bibliography in user's guide
DOC: Rebirth link
DOC: Improve word choice in install guide, given EPD vs Canopy

The installation guide previously claimed that EPD was now called Canopy,
but that is not so.  Canopy is distinct from EPD, and EPD appears to be
in end-of-life (I am speculating based on the Enthought website at time
of writing).
Also, cf. https://www.enthought.com/products/canopy/faq/
DOC TRIV: Strip by-line from README
BUILD: Only build PLY tables when performing setup
Changed Stateflow export to not use Sinit as an initial condition
Removing Sinit from list of states exported.
update documentation, removed pdb import
Merge branch 'master' into doc
jtlvint.check_gr1 is dead.  Long live canonical syntax!
TEST: gr1c interactive session: getvars
TEST: gr1c interactive session: reset
TEST: Unit tests for several MathSet operations
Add export of LtiSysDyn, etc. to .mat files
BUILD: Clean failure with warning if ply not installed
Merge pull request #68 from slivingston/plyclean

BUILD: Only build PLY tables when performing setup
bugfix: MathSet add tuples only once
TEST: Improve coverage of transys.mathset
TEST: Improve coverage of transys.labeled_graphs; unlabeled stuff