TESTS: further checks of optional dependencies (for jwp only)
TESTS: code clean-up for test_fitFunctions
Merge pull request #440 from frankpapenmeier/master

ENH: Set volume in MovieStim (useful to mute sound by using volume=0)
Merge branch 'master' of github.com:psychopy/psychopy
DOCS: updated changelog. Removed eyetracker component from Builder for release
FF: reinstated use of `guess` for curvefit
ENH: TextBox stim

* Added 2 methods to TextBox class:
+getTextGridCellPlacement(): return a numpy array giving the pos, width,
and         height of each textgrid cell inthe Textbox.
+ getGlyphPositionForTextIndex(i): return the bounding box for the text
character at index i within the text displayed. This is != to the
textgrid cell the char is in, instead is the bounding box of the draw
glyph itself.

* Changed examples:

- simple_textbox: straight forward TextBox use, showing 2 different uses
of common params.
- textbox_glypth_placement: displays the mouse cursor with the current
mouse x,y window position (in monitor units), useful for checking the
accuracy of the
information returned by getGlyphPositionForTextIndex()
- textstim_vs_textbox.py: test different timing conditions for the
TextBox and TextStim, allowing a user to check what performance (and
differences) to expect with the two text stim types with a string of a
specified length.
TESTS: fix to the test of ipython import
BF: iohub Touch Device OS X fixes.

+ some general usability fixes in the touch device demo.
Merge branch 'master' of git://github.com/psychopy/psychopy
BF: fixed error in __del__ of TextBox FontManager
Merge pull request #441 from isolver/master

ENH: TextBox stim
ENH: User defined font files can be added...

to the FontManager TextBox uses
Merge branch 'master' of git://github.com/psychopy/psychopy
Merge pull request #442 from isolver/master

ENH: User defined font files can be added to the FontManager used by TextBox.
BF: removed mouse window exclusive on OSX

- already removed from other OS's. Since integration with psychopy there
is no reason iohub needs to have window related functionality that can
already be done in pyglet.
Merge branch 'master' of git://github.com/psychopy/psychopy
Merge pull request #443 from isolver/master

BF: removed mouse window exclusive on OSX from iohub
ENH: switching wx.Color to wx.Colour (for compatibility with wx 2.9.xx)
ENH: Window sends a 'stay awake' signal during flip (win32 and OSX)