(Fixes issue 399) disable NSUndoManager grouping by events as it causes a spin condition on the run loop
(Fixes issue 399) disable NSUndoManager grouping by events as it causes a spin condition on the run loop

Suninus/cocotron,ruppmatt/cocotron,crystax/android-vendor-cocotron,plasq/cocotron,gemu2015/cocotron-sierra,yuhangwang/cocotron,cjwl/cocotron,guestOS/guestOS,plasq/cocotron,guestOS/guestOS,yuhangwang/cocotron,cneira/cocotron,gemu2015/cocotron-sierra,JackLian/cocotron,cneira/cocotron,guestOS/guestOS,cyclaero/cocotron,JackLian/cocotron,cneira/cocotron,cyclaero/cocotron,Suninus/cocotron,crystax/android-vendor-cocotron,cyclaero/cocotron,JackLian/cocotron,plasq/cocotron,gemu2015/cocotron-sierra,cjwl/cocotron,cyclaero/cocotron,guestOS/guestOS,Suninus/cocotron,cneira/cocotron,yuhangwang/cocotron,JackLian/cocotron,yuhangwang/cocotron,cjwl/cocotron,Suninus/cocotron,ruppmatt/cocotron,ruppmatt/cocotron,crystax/android-vendor-cocotron,plasq/cocotron,ruppmatt/cocotron,crystax/android-vendor-cocotron,gemu2015/cocotron-sierra,cjwl/cocotron