isdataset: initial commit
rwdatasetmap: initial commit
assign_groupid: initial commit
create matlab toolbox
change some barcode cols to strings

Changed the contents of the "barcode" column of the sheets PlateData
and WellDataMapped, so that the couple of erroneous barcodes, which
appear as date-time cells, will now contain plain strings, in the
format '%Y%m%dT%H%M%S'.

(This was done by using the formula =TEXT(<CELL>, "YYYYMMDDThhmmss").)

The reason for doing this is that the proper handling of these faulty
barcodes in MATLAB is too difficult to be worth the trouble.  (The
problem is that MATLAB reads these barcode columns as strings, which
results in a loss of precision for the datetime cells; as a result,
converting these values to date strings results in dates that are a
couple of seconds off.  This then becomes a problem when attempting to
match these "barcodes" with the corresponding barcodes from other
spreadsheets, which are *originally* stored as strings.)
initial commit: copy of MATLAB's x2mdate

This function is buggy; I'm committing a copy of it, in its original
(buggy) form, before committing the fixed version.  I've also changed
the name, so as not to break any other MATLAB code that may "rely on
the bug" (so to speak).
isna.m: superficial change
rwdatasetmap: important bug fix
fix/optimize fix_barcode
optimize repgroup
update .gitignore
rounding with precision
script to build CNI2 basal DS
more supplements from ML2013a
mgh1.py: superficial changes
mgh1.m: major update
mgh1.m: minor decrufting
update dataframes/.gitignore