lobstr 3.0.3 (new formula)

lobSTR: A short tandem repeat profiler for personal genomes
http://genome.cshlp.org/content/early/2012/04/19/gr.135780.111.abstract
A head block is preferred in the class
```
head do
  url "https://github.com/mgymrek/lobstr-code.git"
  depends_on "autoconf" => :build
  depends_on "automake" => :build
end