Merge pull request #241 from kmsquire/devel

Update DataFrames to 0.2.1, point to latest commit.
ChainedVectors: Chain multiple Vectors to appear contiguous. Provide view to a portion of the chain.
Collection of parallel computation utilities
Update Clustering to v0.2.0
Merge pull request #244 from lindahua/devel

Update Clustering to v0.2.0
Merge pull request #242 from tanmaykm/devel

ChainedVectors: Chain multiple Vectors to appear contiguous. Provide view to a portion of the chain.
Merge pull request #243 from amitmurthy/PTools

Collection of parallel computation utilities
Update of SimJulia to a combined continuous time / discrete event process oriented simulation framework written in Julia inspired by the Simula library DISCO and the Python library SimPy.
Merge pull request #245 from BenLauwens/SimJulia

Update of SimJulia to a combined continuous time / discrete event proces...
Requires Julia 0.2 due to StrPack dependency

Thanks to @mlubin for pointing this out
Add DataFrames v0.2.2
Add Optim v0.1.3
New version
Merge pull request #246 from mbaz/Gaston

New version
Bump MLBase v0.1.0
Merge commit '56e4e05474252898c219bb59f486f81c07cee72d' into devel
Merge pull request #247 from lindahua/devel

Update MLBase version 0.1.0
Gtk v0.1.0 -- refactor Gtk with more flexibility to add GUI elements and add Windows support
Add Optim v0.1.4
Update Catalan