Add unit tests for writing and reading several formats: GeoJSON, CSV, GMT, GPX.  Updated GML and KML tests to make sure reading is working too.
AbstractGridCoverage2DReader: fix formatting and order
Refactor AbstractGridCoverage2DReader to remove all direct calls to the variables that assume one layer.
Grid Coverage: Fix error in refactoring methods.
Merge pull request #354 from NielsCharlier/coveragereader

Refactor AbstractGridCoverage2DReader
Geopackage Mosaic Reader
Merge pull request #355 from NielsCharlier/geopkg

Geopackage Mosaic Reader
[GEOT-4684] Build failure in geopkg GeoPackageReaderTest caused by bad File-URL conversions
[GEOT-4685] SLDStyleFactory graphic rasterization does not honor the rendering hints field
[GEOT-4686] WMSCoveageReader can return coveage bounds with no CRS
[GEOT-4687] Build failure in gt-svg DrawTest caused by visibly different image
[GEOT-4688] SimplifyingFilterVisitor should simplify and-ing/or-ing of negated filters
Fixing test, and also a bug in wfs store, attributes used in post filters were not being requested to the remote wfs
Check for references when removing a coverage on Imagemosaic (Related to GEOT-4640)
[GEOT-4691]: NetCDF envelope fix (corner coordinates)
[GEOT-4691]: Fixed tests
simple composite curve type parsing support included, GEOT-4683, fixes #357
Merge pull request #336 from jericks/ogr_5

Add unit tests for writing and reading several OGR formats.  Fixes JIRA issue GEOT-4654
Merge remote-tracking branch 'upstream/master'