Seup directory structure.
Added package level README.  A good idea since the package will be split off and subtreed into other repos.
Moved memh5 coded to caput.
Started testing and development of memh5 in earnest.
Some more thurough unit testing.
Finished minimal memh5 functionality.
fixed conflict.
Converted andata to principally use caput.memh.
merged with copy from ch_util.
fixed conflicts.
Merge pull request #3 from kiyo-masui/merge_export

Merge export