Upgrade blender to newest version

[vytasrgl]

Latest version of blender should be used for stability and performance 2.79 for now.

[linas]

OK so pull request #22 does this, but our blender files are not compatible. The animations don't auto-start, and when manually starting the command listener I get the error:

AttributeError: module 'bpy' has no attribute 'evaAnimationManager'

When starting animations, I get:

RuntimeError: Operator bpy.ops.wm.animation_playback.poll() failed, context is incorrect

[linas]

Actually, this is an oldie: hansonrobotics/blender_api/issues/76

[linas]

Hmm works great with blender 2.78 that come with Debian 9 stable (Stretch). So it seems that 2.79 and 2.75 are broken... I'm guessing that anything coming from the ppa:thomas-schiex/blender repo is broken ...

[vytasrgl]

2.79 works fine for me from ppa:thomas-schiex/blender with sophia_blender_api

[linas]

well, then merge pull req #22 -- but, for me, using the standard install with wenwei scripts, with that pull req applied, I got the AttributeError: module 'bpy' has no attribute 'evaAnimationManager' error above.