wxmaxima: add support for --HEAD

Closes #1116.
vcftools 0.1.12b

Closes #1114.
SuiteSparse: install Matlab interfaces.
delly 0.5.6

Closes #1118.
oce 0.16

Update to 0.16
Add options for new opencl support

Closes #1115.
gmt4: add mirror, opt_prefix
edirect 1.90
sextractor: use patch DSL
emboss: add mirror, option to run embossupdate
CONTRIBUTING: move Issues on top, condense
Use stable opt_lib path
graph-tool: avoid hard-coding /usr/local
Use stable opt paths
opencv: broaden python support

Python lib and Headers directory missing from Anaconda.

Closes #843.
CONTRIBUTING: fix notes link, cleanup
opencv: support Python versions
nextflow 0.8.5

Add new :java dependency.

Closes #1068.
vislcg3: 0.9.8.10063 (new formula)

Closes #1120.
vislcg3: access Formula for path

Avoid hard-coding /usr/local prefix.
r: Fix the build for Linuxbrew