BloscpackArgs object
fix the BloscpackArgs object
fix use of BloscpackArgs in pack and co
fix test_append.py
fix remaining tests
a simple test of the BloscpackArgs object
fix all the command line stuff
remove trailing whitespace in abstract object
don't put the comma in pformat, use __repr__ for roundtrips
fix some typos
update the README
Merge branch 'feature/BloscpackArgs'

* feature/BloscpackArgs:
  update the README
  fix some typos
  don't put the comma in pformat, use __repr__ for roundtrips
  remove trailing whitespace in abstract object
  fix all the command line stuff
  a simple test of the BloscpackArgs object
  fix remaining tests
  fix test_append.py
  fix use of BloscpackArgs in pack and co
  fix the BloscpackArgs object
  BloscpackArgs object
BloscpackArgs have been implemented
remove unused import
add BloscpackArgs to toplevel import
fix docstring
fixup docstring
simplify instantiation of the BloscpackArgs
no need to import if we will use defaults
test level