adds lenna and takeo pts files
changes aam4_test
fixes aam_builder_test
first improvements to transform docs
fixes io tests
small changes to io tests
fixes aam_fitter_test
adds mock verbose and str tests
fixes small bugs
fixes clm_builder_test
fixes clm_fitter_test
Transform and Transformable docs
Alignment docs
Change iteration in landmarks to match dictionaries

This has a nice side effect in that now we can do

if 'key' in image.landmarks:
  print 'Success'
Add the del method to landmarks

Now we can delete landmark groups from landmark managers!
A load more tests for landmarks
defines sdm_trainer_test
transform composable
VComposable TransfromChain doced
Allow the deletion of landmark labels as well

If you try leave a point unlabelled, this will throw an
exception!