new InstantaneousBase, TimeHistoryBase classes - see Issue 61
new InstantaneousBase, TimeHistoryBase classes - see Issue 61

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