Fixed (?) bugs in DVscript, so now runDV works as expected.
Introduced new function in fileIO - pushed to pylogeny repo - to glob a dir
by a list of file extensions. This allows Collection::readfiles to take
a compression argument, and glob fasta/phylip files that have .gz and .bz2
extensions.
Merge branch 'master' of github.com:kgori/pylogeny