Update BioSeq

Using interp_parse_bytes and interp_parse from Julia 7f62333ea9
Fixed for Julia 0.2 & Julia 0.1
Merge pull request #120 from stevengj/master

bump PyCall version to work with latest Julia
Merge pull request #119 from diegozea/patch-3

Update BioSeq
bump PyCall version to work with latest Julia (again)