Tiled 0.5.1 is certainly late, and thus a number of requests have built up while we've been busy with other projects. It is a step closer to the stability we hope to achieve, and it adds some of the features that have been asked for.
- Added a checkerboard background to tileset palette
- Added support for layer locking (not editable when locked)
- Added support for tmx.gz map files
- Added selection addition and substraction via Shift and Ctrl respectively
- Improved the drawing speed thanks to some thorough testing and suggestions (Jerome Blouin)
- Improved transformation so that it respects selections
- Fixed the "Save As Image" feature to use current zoom level
- Fixed drawing on invisible layers
- Fixed selection rectangle to include one more tile
- Fixed loading of plugins that only do export and no import
- Fixed removing tilesets in the Tileset Manager
- Fixed image loading to ensure hardware acceleration is used where possible in Java 1.4 and above (Jerome Blouin)
- Fixed a NullPointerException when loading TSX files as imported tilesets
- Fixed an "Unsupported protocol" error when loading TMX files which referenced an external tileset under certain conditions
- Fixed a ClassCastException when loading GIFs as tilesets