circos 0.64: New formula

Circos is a software package for visualizing data and information. It
visualizes data in a circular layout — this makes Circos ideal for
exploring relationships between objects or positions.
ray 2.3.0

Fails to build with clang, llvm and gcc-4.2. Builds with gcc-4.8.
ray: Add HEAD

Requires RayPlatform.
https://github.com/sebhtml/RayPlatform
snpeff 3.4i

Closes #584
beetl 0.9.0: New formula

BEETL: Burrows-Wheeler Extended Tool Library

Markus J. Bauer, Anthony J. Cox and Giovanna Rosone
Lightweight BWT Construction for Very Large String Collections.
Proceedings of CPM 2011, pp.219-231
ropebwt 20130801: New formula

RopeBWT is the predecessor of ropeBWT2. The old version implements
three separate algorithms: in-memory BCR, single-string incremental
FM-index on top of a B+ tree and single-string incremental FM-index on
top of a red-black tree. BCR is later extended to support RLO and RCLO
as well.

https://github.com/lh3/ropebwt2#ropebwt2-vs-ropebwt
ropebwt2 r132: New formula

RopeBWT2 is an experimental tool for constructing the FM-index for a
collection of DNA sequences.

https://github.com/lh3/ropebwt2#introduction