+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)
+