* Splash screen at start up
* Dr. Geo is now shipped with the new COG Virtual Machines for
Linux, Mac OSX and Windows. It is much faster. Note: with this VM,
keypad does not work under GNU/Linux right now.
* Rehash items before saving a sketch to a file, otherwise it may
produce a corrupted file.
* Dr. Geo started with an error at startup from a Windows PC. It
is a problem of the underneath Pharo Smalltalk 1.4, still in beta.
* Catch error when user inputs an incorrect value.