mac pro lastResults.txt

interesting differences — just installed off the shelf.
Fix humdrum link
Merge pull request #61 from jamesdoherty/master

Fix humdrum link in docs
Many many sm. changes in anticipation of PY3

Also iPython improvements
Merge branch 'master' of https://github.com/cuthbertLab/music21

Conflicts:
	music21/test/lastResults.txt
More PY3 changes and MultiprocessTest
more PY3 improvements
Merge remote-tracking branch 'upstream/master' into StaffLines