Errors on scene shutdown

[aprotopsaltis]

Some errors are generated on scene shutdown. It is probably related to VertexArray.
All examples, except 1,2 and 11, have this issue. Also, when running the code with the debugger the error is filtered.

Unable to import OpenGL.arrays.lists.ListHandler: sys.meta_path is None, Python is likely shutting down
Exception ignored in: <function VertexArray.del at 0x7fd074d10ca0>
Traceback (most recent call last):
File "/Users/antonisprotopsaltis/Documents/docs/work/ORAMAVR/src/Elements/Elements/pyGLV/GL/VertexArray.py", line 88, in del
File "src/latebind.pyx", line 39, in OpenGL_accelerate.latebind.LateBind.call
File "src/wrapper.pyx", line 299, in OpenGL_accelerate.wrapper.Wrapper.call
File "src/wrapper.pyx", line 161, in OpenGL_accelerate.wrapper.PyArgCalculator.c_call
File "src/wrapper.pyx", line 128, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 114, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 212, in OpenGL_accelerate.wrapper.CallFuncPyConverter.c_call
File "src/arraydatatype.pyx", line 172, in OpenGL_accelerate.arraydatatype.ArrayDatatype.asArray
File "src/arraydatatype.pyx", line 55, in OpenGL_accelerate.arraydatatype.HandlerRegistry.c_lookup
TypeError: ("No array-type handler for type <class 'list'> (value: [2]) registered", None)
Unable to import OpenGL.arrays.lists.ListHandler: sys.meta_path is None, Python is likely shutting down
Exception ignored in: <function VertexArray.del at 0x7fd074d10ca0>
Traceback (most recent call last):
File "/Users/antonisprotopsaltis/Documents/docs/work/ORAMAVR/src/Elements/Elements/pyGLV/GL/VertexArray.py", line 88, in del
File "src/latebind.pyx", line 39, in OpenGL_accelerate.latebind.LateBind.call
File "src/wrapper.pyx", line 299, in OpenGL_accelerate.wrapper.Wrapper.call
File "src/wrapper.pyx", line 161, in OpenGL_accelerate.wrapper.PyArgCalculator.c_call
File "src/wrapper.pyx", line 128, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 114, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 212, in OpenGL_accelerate.wrapper.CallFuncPyConverter.c_call
File "src/arraydatatype.pyx", line 172, in OpenGL_accelerate.arraydatatype.ArrayDatatype.asArray
File "src/arraydatatype.pyx", line 55, in OpenGL_accelerate.arraydatatype.HandlerRegistry.c_lookup
TypeError: ("No array-type handler for type <class 'list'> (value: [3]) registered", None)
Unable to import OpenGL.arrays.lists.ListHandler: sys.meta_path is None, Python is likely shutting down
Exception ignored in: <function VertexArray.del at 0x7fd074d10ca0>
Traceback (most recent call last):
File "/Users/antonisprotopsaltis/Documents/docs/work/ORAMAVR/src/Elements/Elements/pyGLV/GL/VertexArray.py", line 88, in del
File "src/latebind.pyx", line 39, in OpenGL_accelerate.latebind.LateBind.call
File "src/wrapper.pyx", line 299, in OpenGL_accelerate.wrapper.Wrapper.call
File "src/wrapper.pyx", line 161, in OpenGL_accelerate.wrapper.PyArgCalculator.c_call
File "src/wrapper.pyx", line 128, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 114, in OpenGL_accelerate.wrapper.PyArgCalculatorElement.c_call
File "src/wrapper.pyx", line 212, in OpenGL_accelerate.wrapper.CallFuncPyConverter.c_call
File "src/arraydatatype.pyx", line 172, in OpenGL_accelerate.arraydatatype.ArrayDatatype.asArray
File "src/arraydatatype.pyx", line 55, in OpenGL_accelerate.arraydatatype.HandlerRegistry.c_lookup
TypeError: ("No array-type handler for type <class 'list'> (value: [4]) registered", None)

[kamarianakis]

Using atexit seems to resolve all issues, at least on Mac. Resolved for Mac in #51