dev

revert-2281-patch-1

revert-2090-fix-no-dom-contains

revert-2001-fix-non-unique-ids

refactor/material2

refactor/change-ads

refactor/MdRipple/implement-better-ripple-styles

master

fix/MdStepper/tabindex

feature/readme-update-backers

feature/add-open-collective

feat/update-dependencies

docs/tag-manager

docs/migration-guide

docs/components-page

docs/add-ads

dev-recovery

dependabot/npm_and_yarn/elliptic-6.5.4

components/MdSlider

components/MdPopover/refactor-to-use-simple-portal