animate calls return correct typings
Merge branch 'api-breaks' into animatorType

Conflicts:
	plottable-dev.d.ts
	plottable.d.ts
Merge pull request #1104 from palantir/animatorType

animate calls return correct typings
Redid stack logic to split into positive negative
Adding baseline and fixing extent logic
Aligning attributes to support negative
Adding tests
Forgot to remove svg
Forgot semicolons
Squashing valueNegative variable
data -> datasets
Combining extract positive/negative datasets
Removing dataset argument
_stack returns the data that has been stacked
Removing newline
Adding private function comments
Scoping vars to as inner as possible
Ternary magic
stack offset field no longer needs to be protected
Moving variables and newlines