material-ui 1.0.0-beta.20 on Node.js Yarn

Big thanks to the 12 contributors who made this release possible.

Here are some highlights ✨:

We have been addressing a lot of bug and documentation issues during the last month.
We should soon be able to start porting new components.
The test coverage increased by 0.5% thanks to @leMaik effort (#8910, #8911).
We are very close to 100%.
The internal ClickAwayListener component was made public (#8967)

[style] Improve the font-size situation (#8942) @oliviertassinari
The Input and FormLabel component do no longer inherit the font-size. You might have to override them explicitly.
[Popover] Add a max-height (#8943) @oliviertassinari

-Menu.classes.root
+Menu.classes.paper

-import { withResponsiveFullScreen } from 'material-ui/Dialog';
+import { withMobileDialog } from 'material-ui/Dialog';

[MenuList] Increase test coverage and fix an exception in an edge case (#8911) @leMaik
[Input] Fix textarea width (#8921) @istarkov
[SwitchBase] Inherit disabled from FormControl (#8917) @nllarson
[Popover] Improve the warning message (#8948) @oliviertassinari
[Popover] Add max-width (#8992) @oliviertassinari
[InputAdornment] Correct typescript export (#8959) @minajevs
[utils] Make ClickAwayListener public (#8967) @oliviertassinari
[Slider] Add the logic back (#8972) @oliviertassinari
[Select] Remove IE11 arrow (#8976) @oliviertassinari
[Select] Menu Items centered in IE 11 (#8982) @lukePeavey
[Select] Fix width on Safari (#8985) @oliviertassinari
[IconButton] Add buttonRef property (#8986) @oliviertassinari
[Grid] Document a limitation (#8987) @oliviertassinari
[Tooltip] New warning message (#8988) @oliviertassinari

[docs] Split support content of CONTRIBUTING.md into SUPPORT.md (#8918) @mbrookes
[docs] Add demo for buttons with label and icon (#8922) @wongjiahau
[docs] Fix broken link (#8934) @cantsdmr
[docs] Fork JssProvider to release the docs (#8929) @oliviertassinari
[docs] Add more information around the MenuList component (#8947) @oliviertassinari
[docs] Add --save parameter (#8961) @phoqe
[docs] Add guideline for docs/demo contribution (#8953) @wongjiahau
[docs] Use onChange instead of onClick for switch-like examples (#8971) @pelotom
[docs] Fix flow example (#8968) @oliviertassinari
[docs] Use next tag for the npm version badge (#8989) @leMaik
[docs] Add a JssProvider and CSS injection order section (#8993) @oliviertassinari