Also, fix detection of IE so it works. Apparently bowser.name !== 'IE' on IE with bowser. bowser.msie works though.

bowser correctly detects Chrome Headless as Chrome, is already used by scratchr2, and is more actively maintained than platform.

Project loader refactor

- better split of hash-parser/project-loader unit tests.

Interact with blocks categories by id instead of by name

Update scratch-svg-renderer to fix IE11

Add missing quotes to .babelrc configuration

chore(package): update scratch-paint to version 0.2.0-prerelease.2018…

Closes #1949

Update scratch-render to get the babel-built version of fonts

Add instructions to PR template browser coverage section

remove question event listener on stage unmount

Fix linting errors from eslint-plugin-react

Update scratch render again to fix speech bubbles again

Fixes from smoke test

Including triple scrollbars on list monitors and fixing the say bubble fonts

Add dependencies that are updated by change to svg-renderer

Make slider and list monitors update variables in the VM

Update scratch-vm dependency

This fixes the music manifest issue.

Send svg renderer to vm

Update vm and blocks for block visibility