simdex.scan() adjusted to read resultfiles from .txt and .mat format.
New method simdex.append() necessary to merge two simdex objects.
New method simdex.get_par_val() to get the values of a specific parameter (input)
unittest for get_par_val()
Restored default for scan to only matfiles as it might produce undesired results.
.txt files also possible through boolean txtfiles=True as input.
small bug in simdex.scan() fixed
Modifications to h5table interface with the simdex.
add option to "append" simdex to the h5 pytable. "Overwrite" would erase the last simdex data since the h5 pytable would disappear.
h5pytable can store the resultfiles from all simdexes.
Each simdex now references to it's resultfiles in the common h5pytable.

append_simdex() : h5 pytable needs to load each result only once when merging two simdexes.