Manual screening update

Mostly changes to get manual screening working but some other tidying
as well
Manual screen fixed

Adjusted the manual screen to reject any epochs requested for exclusion
that weren’t actually found. It was throwing a index mismatch before.
Also adjusted the plotting input for the epoched data to accept number
entries for toggling through the data.
minor updates

working on hatbox
Screening update

Some extra command window information and old (tilda ‘~’ delimited)
manual screening files functional
Merge pull request #3 from nicalbee/master

November updates