Added function that computes standard error of the mean.
Revert "Added function that computes standard error of the mean."

This reverts commit f2a3b7ab913958b0a125dfe5a8847fb132d58dec.
It was a mistake
Added starting file
Major change: Breaking response scoring into separate function, nonfunctioning version
Breaking scoring etc into separate functions, most of way through
About to have expStop break out rather than print dummy stuff to datafile. Will R have trouble importing partial line?
Seems to basically work. But want to be able to opt out of staircase. Will add dialog box for that next
Can now opt out of staircase with dialogue box. Works at least partially
Brought in my Quest letter noise demo, kept improving AB.py (although not certain staircase is working right)
Staircase seems working. Now debugging output file
not sure what did
renamed easyStarter trials with prefaceStaircaseNoise