Mpl-stereo

Added
* Project logo
* Support for 2D plotting methods: `text`
Changed
* Docs improvements
* Fix bug when no variation in z data
Removed

Added
* Animation example for 2D stereograms
* `z_zero` keyword argument to 2D plotting methods to set focal plane
Changed
* Allow passing in existing axes to object creation
* Rename `focal_plane` to `eye_balance`
* `z_scale` is now a keyword argument to 2D plotting methods to set z-axis scaling, fixed units to match x-axis
* Fixed 3D plotting z scaling
Removed
* `z_scale` argument from AxesStereo3D

Added
* AxesAnaglyph for red-cyan anaglyphs
* Publishing instructions
Changed
* Only apply inaccurate axis label transparency to x axis labels
* 3D plots now share their view while rotating, with offset applied
* Everywhere applicable, pass-through methods now return a tuple of (res_left, res_right) for the results from both axes calls

Added
* Tests
Changed
* 2D scatter plots have their z values sorted to not improperly occlude

Added
* README warning about data shifting in 2D plots

Added
* Initial release!