Release 1.2.3 Tulip
	-Made separate library for openGL displaying stuff
	-Corrected several displaying bugs, such as connexion between arrow and edges
	-tlprender now effectively uses PNG by default
	-Plugins are now looked up in installation directory AND additionnally in
	 user's home dir
	-Made configure and build process more robust: fix uses of --with-gl[...]
	 parameters in configure, can build on systems without the "sstream" header,
	 corrected several inclusions in source files, disable compilation of
	 tlprender if libOSMesa is not found or is unusable.

Release 1.2.2 Tulip

Library :

Software :

View module :

Application window :

Plug-ins :
	- Use of progress bar inside plugins has been added in several plugins.

Clustering :
	- Enhancement of the convolution clustering algorithm, add of a widget of control for seting
	parameters.

Import :
	- Bug in some import plugins has been removed (unable to use it from the HCI)
	- Added new random generation of general graph algorithm.