Release 1.2.1:
	- Added: HB-Donors and HB-Acceptors, TPSA, Rotatable bonds, RO5 and RO3 as calculated properties.
	- Added PAINS tools for calculation and visualization of PAINS matched substructures.
	- Error handler added. Errors and bugs during software execution are reported preventing the software from crashing.
	- The software now is provided with a 15-day demo mode.
	- Added Save button for easly saving the changes of current project. The Save As button has been moved to the File menu.
	- Correction of a bug when importing sdf files. When an sdf file contained compounds with different number of properties between them, the software crashed.