- user can add own event types using the filter event type drop down box
file split fix
- add color selection for new event type adding
- filters are undone before filtering with a new filter
- press enter or return to filter all channels
- user can undo filtering by pressing Ctrl+Z or hit the delete key
- filter can be applied/removed to/from all or type specific channels
- change scale window max values
Merge branch 'master' of https://github.com/mne-tools/mne-cpp