Makes sure no info is printed to the screen when verbose is set to False when calling selectByStdDev()

Signed-off-by: Lotje van der Linden <l.vanderlinden@cogsci.nl>
In selectByStdDev(): Remove dummy columns before creating them

This causes no harm if they didn't exist yet, but helps a lot if they did already exist. This enables you to trim multiple variables in the same DM, without having to delete the temporary columns manually

Signed-off-by: Lotje van der Linden <l.vanderlinden@cogsci.nl>
Warn when selecting from empty DataMatrix
Add exgaussian to Fitting module
Add showSpurious option to TraceKit.markStats
Automatically create folder for trace pngs in EyelinkAscFolderReader
Merge remote-tracking branch 'lvanderlinden/master'