Update GRT to svn 303
Add method for detecting peaks in list input
Re-add GRT const fixes!
Added a test for peak detection
Add initial HMM implementation
Add HMM attributes
Rename ml.svm.maxpat to ml.svm.maxhelp
Automate copying of help files to develop / deployment folder
Add help file bindings, fixes #61
Correct HMM instantiation message
Add Pd help patch for ml.svm
Add attributes to HMM usage statement
Update Max regression test with HMM attributes
Wrapper mechanism refactor making the API somewhat safer

Instead of retaining a pointer to an MLBase instance in ml_base, we provide pure virtual functions in ml_base that return references to an MLBase instance.

The sam pattern is used for ml_classification_base and ml_regression_base.
Remove ml_peak inheritance from ml_base
Break ml_classification and ml_regression into separate headers
Remove implicit pure virtual method call from base class constructor
More concise symbol_to_string() with no error() side effect
Rewrite file loading functionality so that it is not possible to load unsupported data. Fixes #65
Make save operations data type specific. Fixes #66