Bump rollup and buble dependencies
Bump rollup and buble dependencies

Rollup 0.45 is the last version that was transpiled to
Nodejs v0.12-compatible JavaScript.

TimothyGu/acorn,mathiasbynens/acorn,TimothyGu/acorn,ternjs/acorn,marijnh/acorn,marijnh/acorn,mysticatea/acorn,ajaxorg/acorn,marijnh/acorn,TimothyGu/acorn,mathiasbynens/acorn,ternjs/acorn,mysticatea/acorn,mathiasbynens/acorn,mysticatea/acorn,ternjs/acorn,ajaxorg/acorn,ajaxorg/acorn