IVector<> implementation with Solid.Vector (#51), changed ReadOnlyCollection<> to just simple IList<>, kind of dependency injection for different IVector<> implementation (VectorBuilder type) --all tests pass with SolidVector
More IList<> usage instead of [] or ROC
Added Solid sources
RProvider builds
edit .gitignore
edit .gitignore
Ignore lib files
Misc
Imported Solid source code (MIT license) for closer integration, improved SolidVectorBuilder. Tests pass at this point.  ``Can perform pointwise numerical operations on two frames`` is too slow - investigate!
Fix Series.diff, move methods, add nuget files
Renaming, etc
Update paths and test R interop
Make C#-style extension methods work in all compiler versions by including the Extension attribute at the assembly level.
Very minor doc update
Merge pull request #54 from dsyme/patch-1

Very minor doc update
Passing data frame to R, handle missing data in Map, add tryval
Merge branch 'master' of github.com:BlueMountainCapital/Deedle
Support built-in functions and pow on data frame
HAMT basic implementation
Before cleaning up Solid and weird custom HAMT structures