Pivot table, ref GH #83
Added end line
Small formatting fixes
Trivial string -> bool fix
Added key as input to pivot table function paramters
Added first go at appendN per #103
Added missing pattern match
Additional logic to construct type-correct IVectors within frame appendN
Fill inside per #105
Small cleanup to fill inside
fillMissingBetween throws error if series is not sorted
Fix typo
Implementation of #102
Additional pivotTable sugar, per #100
Merge pull request #110 from tpetricek/master

Finished C# documentation for data frame
SeriesBuilder is now order preserving
Address #112, GetAllSeries issue
#112 Fix syntax a bit
Added take, GH #115
Merge pull request #116 from BlueMountainCapital/ak.take

Added take, GH #115