1.2

add: many distorters (Distorter class)
1.3

Distorter[] distorters
-->
ArrayList<Distorter> distorters;
1.4

add: add distorters (pushing "C") key, delete (select doble mouse click
and "delete" key) and record grid ("R" key)
1.5

Major fixes and improvements
1.6

new: distortions are kept in layers (DContainer Class)
1.7

new: control every distorter (double click on distorter open control
panel)
1.7.2

fix: push key -> release key