Refactor catalog.scala and json parsing.
Refactor of catalog code, should now read geotiffs and ascii in catalog
Tiles, ascii and geotiffs now in catalog
Merge remote-tracking branch 'upstream/master' into catalog/tiles
Setting other projects to use new TileSetRasterLayer
Merge remote-tracking branch 'upstream/master' into catalog/tiles
Added ability to convert tiled rasters.
Merge pull request #471 from lossyrob/catalog/tiles

Put tiled rasters in catalog