Merge pull request #426 from twadleigh/metadata-v2

Bump of ImmutableArrays to v0.0.3.
Tag Gadfly v0.1.21
bump Winston
Tag Gurobi v0.1.4
remove stale versions of Gurobi
Tag Gurobi v0.1.5
Tag Match v0.0.1
Merge pull request #428 from kmsquire/metadata-v2

Tag Match v0.0.1
Register Logging
Tag Logging v0.0.0
Merge pull request #429 from kmsquire/metadata-v2

Register/tag Logging.jl
Tag Tk v0.2.9
Tag Homebrew 0.0.2
Merge pull request #430 from staticfloat/metadata-v2

Tag Tk v0.2.9
Bump Clang
TimeSeries and TimeModels urls updated (moved to JuliaStats)
Tag HDF5 v0.2.12
Merge branch 'metadata-v2' of git://github.com/JuliaLang/METADATA.jl into metadata-v2
ASCIIPlots v0.0.2
Benchmark v0.0.2