Merge branch 'release/0.9.4' into develop
Should create cartographer using factory class
Fix gdal version check under gdal 1.10
add raster cartographer
add shaderelief
merge vrt dataset
remove blend temporarily
add empty file list check
-raster blend
-fix resampling problem in high altitude
add mason config check
Add "node.null" render node for s3cluster config
Merge branch 'develop' of https://github.com/Kotaimen/mason into develop
Merge branch 'develop' of github.com:Kotaimen/mason into feature/raster
Merge branch 'feature/raster' of https://github.com/Kotaimen/mason into feature/raster
fix cache bug, check cache before child renderer
fix bug: name error
Merge branch 'feature/raster' into develop
fix bugs: wrong file reference
Merge branch 'develop' of https://github.com/Kotaimen/mason into develop
Use `from PIL import Image` instead `import Image` to avoid  `AccessInit: hash collision: 3 for both 1 and 1` error