+2014-09-15
+ * removed large parts of the preprocessor hell of old and unused code
+
+2014-09-14
+ * updated source file headers (mainly author contact information)
+
+2014-09-11
+ * added key shortcuts for window scaling and toggling fullscreen mode:
+ - Ctrl-'+', Ctrl-'-' and Ctrl-'0' for up/downscaling and normal size
+ - "F11" key for toggling fullscreen mode (in addition to Alt-Enter)
+
+2014-09-10
+ * fixed some drawing bugs when scaling graphics due to "game.tile_size"
+ * added some performance improvements when handling SDL surface scaling
+
2014-09-04
* added custom graphics property "game.tile_size" to define in-game tile
size (this defines the tile size actually displayed on the playfield);