implement Function.prototype.bind in legacy.js (closes #465)
closes #460, again. Plus some linting
another go at #460...
fire change events when array mutator methods are used
refactor smart updates a bit
fix bone-headed #464 bug
prevent similar bugs from #464
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Merge pull request #468 from codler/0.4.0

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always export as global variable, but add Ractive.noConflict(). tweak build process to accommodate
Merge branch '0.4.0' of https://github.com/RactiveJS/Ractive into 0.4.0