DOCS: updated version and changelog

Also changed OSX setupApp script:
	- removed nose because no longer used
	- temporarily(?) removed psignifit because doesn't work with py2.7
TEST: BF utils better handling of float lists in compareTextFiles()

reveals similar bug in compareXlsxFiles, not solved by np.allclose()
TESTS: BF compareXlsxFile

intercept lists-of-floats and allow close rather than exact match
Merge pull request #197 from jeremygray/master

tweaks to tests for lists of floats
BF: path for icon for visual.Window
BF: use csv files as output from Builder experiments (not dlm)
DOCS: updated version and changelog

Also changed OSX setupApp script:
	- removed nose because no longer used
	- temporarily(?) removed psignifit because doesn't work with py2.7
BF: don't raise a warning if no known compatibility issues
BF: second attempt to force Experiment class to output csv instead of dlm files
ENH: new experiments won't save excel files or loop-based psydat files

From now on, the default for new experiments is 1 log file,
1 csv (wide) file and 1 psydat (ExperimentHandler)
DOC: bumped version number for release 1.75.00
BF: problem with sounds in Builder when the sound had infinite duration
Merge branch 'master' of github.com:peircej/psychopy

Conflicts:
	psychopy/data.py
BF: unicode issue in date in info.py

fix: return numeric date
Merge pull request #198 from jeremygray/master

unicode date fix for info.py; icon path for visual.Window
DOCS: and version bump
BF: fix to tiling of depth values for ElementArray vertices (thx Yuri Spitsyn)
BF: 'Units' option of ApertureComponent becomes effective.
ENH: setSize() and setPos() of visual.Aperture support 'log' option.
Merge pull request #203 from hsogo/master

Fix several bugs in ApertureComponent