Python wrapper updates

[nneonneo]

Here are a number of minor changes I've made to the Python wrapper over the past few years. I've recently rebased against today's master branch, and verified that the changes are working.

Changes:

• Fix link error on OS X
• Prevent invalid *Ptr classes from being created from Python by accident
• Gracefully handle non-standard depth/video modes, and handle 10-bit IR mode properly
• .gitignore/.gitattributes changes for happier development
• Build wrapper with Cython 0.20 to pick up the latest Cython fixes

[piedar]

What's the benefit of treating freenect.c as binary?

[nneonneo]

Pretty much any change in freenect.pyx produces a huge change in
freenect.c, which pollutes the diff unnecessarily.
On Sep 1, 2014 5:19 PM, "Benn Snyder" notifications@github.com wrote:

What's the benefit of treating freenect.c as binary?

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[piedar]

True. It might be even better to remove freenect.c and have a build dep on cython (note to self).

[nneonneo]

Not particularly ideal for people without Cython, though. I usually try to
avoid build requirements if possible.
On Sep 2, 2014 12:47 AM, "Benn Snyder" notifications@github.com wrote:

True. It might be even better to remove freenect.c and have a build dep on
cython (note to self).

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