Release 4.0-beta10

New features:

• Codon models can now use all known genetic codes (https://www.ncbi.nlm.nih.gov/Taxonomy/Utils/wprintgc.cgi)
• Equilibrium non-reversible models now work with variable-alignment analyses.
• Improve help: colorized, improved signatures, more readable types.
• Add commands bali-phy print <expression>, bali-phy run <Prog> <arg1> <arg2>, bali-phy model <Model> <arg1> <arg2>.

Bug fixes:

• Fix non-standard genetic codes.
• Fix specifying Codons(DNA) and Codons(DNA, <code> )
• Fix density for Exp-transformed distributions like log-normal.

Misc:

• Refactor Numeric classes Log Double and Prob
• Allow testing isInfinite x and isNan x in Haskell.