plot.animateOnNextRender added

used to only animate the first time a _render() is
called, or when data changes
Merge branch 'master' into animate-once

Conflicts:
	plottable.js
	src/core/plot.ts
no animate on scale.broadcast
remove() no longer sets plot.animateOnNextRender
Core.ResizeBroadcaster.resizing() check removed
quicktest updated
animate on resize(), not on renderTo()
textUtils: {width: x, height: y} instead of [x, y]
Merge branch 'master' into animate-once

Conflicts:
	plottable.js
fix ie bug on categoryAxis.ts
Merge pull request #637 from palantir/ie-fix

fix ie bug on categoryAxis.ts
Release version 0.19.1
Add error messages when constructors are called without necessary arguments
corrected objEq, added unit tests
remove accidental ie-quicktest.html
Merge pull request #619 from palantir/animate-once

plot.animateOnNextRender
Restore default Line Plot stylings; project() default styles

By project()-ing the default styles instead of having them in the CSS,
they can be overridden by the user using project().

Downside: harder to discover default values.
Merge pull request #640 from palantir/area-line-styling

Restore default Line Plot stylings; project() default styles
Release version 0.19.2
Release version 0.19.3