Iris Calliope

add help txt for undocumented feature

clear ExpLog before run

bugfix last commit (typo)

exclude shutter and framegalvo channels after *.ach parsing

output bool to indicate if (any) error occured (preserve previous behavior if no output is requested)

strtrim() input strings to avoid bad entries into database

display/search project metafile logs

bugfix (last commit)

- show first/last comment of acode of metafile that is supposed to be fixed
- cosmetic bugfix qexp

implement 'first' parameter: considering all other arguments, outputs x-first elements