06-pex-ctx-00 Context added normal and inverse view matrix support
06-pex-ctx-00 Context added normal and inverse view matrix support

Constrained matrix bits to be only used for push / pop. Introduced
internal matrix keys. Change maps names to be more descriptive:
‘matrixUniformBitMap’ -> ‘matrixTypeByUniformNameMap’ (links matrix
types to uniform preset in ProgramUniform), ‘matrixTempByTypeMap’
(holds the temporary Float32Array matrix according to the type of the
matrix, either 4x4 or 3x3), ‘programMatrixUnifomBits’ ->
‘matrixTypesByUniformInProgram’ (holds all matrix types present in the
current program accessible by uniform name)

variablestudio/pex-context,pex-gl/pex-context