BF: Improved labjack data handling

- If data is dropped by labjack USB HID interface, iohub labjack device
records proper amount of missing data and continues with reporting.
- If chosen sampling rate results in USB HID packets being returned by
labjack that have a first or last sample being a partial read of the N
channels being scanned, the partial channel sample is stored and the
remaining channel data for that sample is appended before the sample is
saved / streamed.
Merge branch 'master' of git://github.com/psychopy/psychopy
BF: eyelink getLastGazePos binoc. support
ENH: Alpha Alpha TextBox stim

* TextBox stim can:
- redraw updated text contents 5 - 20x faster than current TextStim
class.
- other features not supported by textStim possible
- MONOSPACE FONTS ONLY.

* Also added some missing files / folders due to manifest.in
Merge branch 'master' of git://github.com/psychopy/psychopy
Added missing files
BF: Misc fix's, improvements

Also added a TODO.txt
ENH: iohub datastore -> pandas dataframe util

Prototype code for creating a view of collected experiment data from
ioHub datastore hdf5 file using the pandas library.

** Totally experimental and in process at this time!!
ENH: experiment and session id's ....

id's automatically added to datastore condition_variables table.

** The change is not backwards compatible with previous versions of the
datastore hdf5 file format. Start new hdf5 files for all experiments
using iohub datastore when upgrading to this code.
BF:  Removed unused wav files

Cleaned up eyelink interface code a bit.
ENH: TextBox stim horz /vert justification

Can now specify how the text should be positioned within the textgrid of
the textbox when the text length does not fill all char cells.
More work on TextBox
Merge branch 'master' of git://github.com/psychopy/psychopy
removed debug prints
ENH: More work on TextBox stim

tested on OS X 10.9 and seems OK.

* Still needs another day or two of work before I would call it a 'beta'
release.
More TextBox work

- rgb, rgb255, hex, and web color spaces are supported
- cm, deg, pix, norm unit types supported.
Added iohub related changes to changelog
updated change log

Added two, experimental but incomplete, features:
-TextBox stim
- ioDataStore ->Pandas DataFrame API
(remove either for next release if you wish)
noted freetype and freetype-py dependancies

for TextBox stim.
updated TextBox TODO.txt

more current.