LocationTech GeoTrellis 3.1.0

This release addressees compatibility problem with RasterFrames where traits extending CellGrid did not appear to be subclasses of it through reflection. This a major use for GeoTrellis and warrants snap release. Users should use at least version 3.1.0 when upgrading from 2.x branch.

Changed

• Fix StreamingByteReader over-allocation when reading past EOF #3138
• Tile, ArrayTile, ConstantTile, DelegatingTile, MultibandTile, MultibandArrayTile, RasterRegion, RasterSource, MosaicRasterSource converted from trait to abstract class #3136