* added base64 encoding/decoding

* starting framework for ThinPlateSplineTransform

* updated

* changin encode/decode to deal only with numpy arrays

* adding from_dict method to thin_plate_spline

* unflattening matrix

* fixing np -> numpy

* adding to_dict to thin plate spline

* apply flake8

* commenting out thinplate split to_dict

* adding whitespace to start of datastring

* adding textto start dataString

* commenting out _process dataString

* modifying _process dataString

* modifying _process dataString

* modifying _process dataString

* fixing up ThinPlateSpline class

* fixing

* flake8

* fixed test/transform/thinplatespline

* removing trailing L's in hex from encode/decode

* increasing coverage on affine and b vectors

* removing trailing L in hex from encode/decode

* one more hex change

* adding cast to byte for python 3 for zlib decompress output

* adding cast to byte for python 3 for zlib compress input

* casting utf-8

* fixing...

* think python2/3 zlib stuff fixed

* one last python 3 bit

* trivial change to retrigger failed build

* another trivial change to retrigger failed build

* another trivial change to retrigger failed build

* adding decode support for '@'

* major simplification from Russel on encode/decode

* getting rid of leading b'' in encode for python 3

* catching and testing for '@' in decode

* removing bitstring requirement

* removing n argument to decodeBase64

* fixing multiline string

* removed documentation referring to n, retrigger failed build

* accidental deletion

* first try with pytest.raises() for code coverage

* changing IndexErrors to ValueErrors

* last flake8 indent fix

* trivial change to retrigger failed build