closes #53; closes #54; closes #55; minor doco changes
sandbox
closes #63 by avoiding use of temporaries where possible
Updated with changes from AM

- removed return None
- better handling of tuples
- ref/alt in hdf5 uppercase
closes #56
Adding setUp method

So that namespace is not polluted
minor doco
closes #65; closes #64
closes #58
closes #62
closes #49
closes #51
Reordered logic for samples if None

Now no copies of array created unnecessarily
Merge pull request #60 from hardingnj/addtped

closes #35
add support for selection of samples when loading a region
closes #35 by merge of #60
minor doco
minor doco
run examples
v0.9