More strict matrix type
Remove inadvertent double render
Avoid getting map twice
Factor out color matrix generation, move color matrix into layer renderer
Merge pull request #93 from twpayne/webgl-renderer-cleanups

WebGL renderer cleanups
Disable document generation in precommit target, refs #94

Revert this commit when issue #94 is fixed.
Correct Stamen source options
Ignore pake.pyc file.
Ignore all *.pyc files.
make replaced with build.py
Merge pull request #95 from marcjansen/ignore-pyc

Ignore *.pyc files in root directory.
Correctly dispose of layer renderers when layers property changes
Fix typecast in ol.Collection
Fix typecast in ol.Proj4jsProjection
Fix typecast in ol.renderer.dom.Layer
Fix typecast in ol.renderer.webgl.Layer
Fix typecasts in ol.layer.Layer
Fix typecasts in ol.layer.TileLayer
Fix typecast in ol.Tile
Fix non-view-related typecasts in ol.control.Attribution