LMMS/lmms — pull request #487 by diizy (2014-03-19 01:22:48+00:00)
Title: Dual Filter fix: make more efficient -  don't calculate coefficients unn...

...ecessarily

Fixes #485

(Also stop flagging song as modified when controls are changed, as this apparently makes it constantly flagged when controls are automated/controlled with controller... need to find a way to limit the flagging to manual changes only.)