HMMBase v1.0

Improvements:

• Faster and cleaner implementations of the forward, backward, Viterbi and EM algorithms.
• New methods: randtransmat, istransmat, statsdists, permute, copy, size, ==
• Internal refactoring, reduced memory allocations

Breaking changes:

• HMM struct renaming: π0, π, D become a, A, B
• Removal of StaticHMM and StaticArrays dependency
• Methods renaming, see documentation for a full list
• Forward/Backward algorithms uses likelihood by default (instead of log-likelihoods), use the logl option to use log-likelihoods
• Baum-Welch algorithm returns hmm, history instead of hmm, logtot
• rand(hmm, T) returns y instead of z, y by default, use seq = true to get z, y

See Migration to v1.0 for details on migrating your code to the new version.

Thanks to @nantonel PR#6 for the many improvements.