VERSION: 0.1.9
--------------
	NOTES:
		- added a context menu with edit, delete and hide entries. Now the visibility of labels, datasets and functions can be toggled
		- x range and y range can now contain expressions or constants (like pi)
		- fixed a bug that prevented labels from being correctly placed
		- fixed a visual bug in the edit appearance of a dataset dialog
		- added checks for dependencies and gnuplot's executable
		- did a massive code clean up
		- minor bugfixing
		- multi-user support: added a per user gnupylot directory (located at $HOME/.gnupylot)
	KNOWN BUGS:
		- Every now and then big datasets (~10k points) fail to display
	TODO:
		- "Close" and "Close all" menu actions must issue a yes/no/cancel popup if plots to be closed are unsaved
		- Add a dialog to control the appearance of the keys (aka the legend)

VERSION: 0.1.8
--------------
	NOTES:
		- Added support for labels (but broke savefiles backward compatibility!)
		- Deletion of many (~1k) rows from datasets has been highly optimized
		- Implemented the "Close all" menu action
		- Fixed a bug that prevented "gnupylot" executable form working
	KNOWN BUGS:
		- Every now and then big datasets (~10k points) fail to display
	TODO:
		- "Close" and "Close all" menu actions must issue a yes/no/cancel popup if plots to be closed are unsaved
		- Add a "hide dataset/function/label" button
		- Add popup menus for datasets/functions/labels
		- Add a dialog to control the appearance of the keys (aka the legend)

VERSION: 0.1.7
--------------
	NOTES:
		- Added appearance settings for functions and datasets
	KNOWN BUGS:
		- Every now and then big datasets (~10k points) fail to display
		- Trying to delete many (~1k) rows results in minutes of waiting and heavy use of CPU
	TODO:
		- Labels
		- Improve performances
		- Add a "hide dataset/function" button
		- Add popup menus for datasets/functions
		- Add a dialog to control the appearance of the keys (aka the legend)