2015.3: bump version number
2015.3: bump version number

vlukes/sfepy,BubuLK/sfepy,rc/sfepy,RexFuzzle/sfepy,sfepy/sfepy,lokik/sfepy,RexFuzzle/sfepy,sfepy/sfepy,lokik/sfepy,sfepy/sfepy,vlukes/sfepy,vlukes/sfepy,rc/sfepy,rc/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,lokik/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,lokik/sfepy