Prepare release v2.2.0

[giladgray]

🎆 Highlights: customize CSS namespace, percentage-based Slider, Blueprint TSLint rules!

General

• ⭐️ customize CSS namespace #2325 Support for customizing the CSS class namespace pt-
  • in the upcoming 3.0 release, we will change this namespace to bp3- to avoid style conflicts with previous versions of Blueprint on the same page
  • added a new docs page about Classes to encourage use of the forward-compatible Classes constants
• add all local packages to common externals #2328 Fix Webpack externals so *.bundle.js files are as light as possible
• [dev] Fix missing types from node_modules with at-loader on Windows #2367 Fix TypeScript bundling with at-loader on Windows (🎩 @reiv

@blueprintjs/core 2.2.0

• ⭐️ [Slider] Use percentage values in slider styles #2341 Slider now uses percentages instead of pixels for layout, resulting in effortless resizes! (🎩 @reiv)
  
• 📦 Upgrade to normalize.css 8.0.0 #2362 Upgrade to Normalize.css 8.0.0 to fix font-family issues on some components (🎩 @reiv)
• ContextMenu fixes & Overlay didClose #2399 Added Overlay didClose and Popover popoverDidClose lifecycle props!
  • now possible with react-transition-group onExited method (did not exist in 1.0)
• No abbility to ContextMenu.show after modal dialog #2131 ContextMenu now re-creates its DOM element when it closes, allowing it to be used in other overlays like Dialog
• Add pt-fill support for InputGroups #2344 InputGroup now supports .pt-fill modifier (🎩 @qcz)
• [InputGroup] Add default paddingRight to input without rightElement #1861 InputGroup now has default right padding when rightElement is omitted
• [Popover] Improved focus event handling #2382 Popover improved focus event handling, particularly when switching tabs (🎩 @reiv)
• fix Callout icon positioning #2400 Fix Callout icon positioning
• [core] Add missing invoke in checkbox component #2377 Fix Checkbox onChange 😨 (🎩 @js-um)
• UX issue: Popovers near the bottom of the page often expand page height #803 Fix ContextMenu so it will remain inside the viewport
• Adding Scrollable overlays breaks canOutsideClickClose with hasBackdrop false #1188 Fix Overlay outside click logic when hasBackdrop=false
• invoke Portal onChildrenMount _after_ children mount #2401 Fix Portal onChildrenMount so it is invoked after children mount
• Large Tag Input "X" Buttons incorrect Size #2365 Fix large TagInput tag-remove button size
• fix cards interactive docs #2409 File input Sass variables now have !default

@blueprintjs/table 2.1.0

• Fix #2095: Hot reload Table #2390 Fix hot reload support (🎩 @dan-katz)
• sync table quadrants whenever col widths or row heights from props ch… #2118 Fix scroll syncing when widths/heights change (🎩 @mcintyret)

@blueprintjs/tslint-config 1.2.0

• ⭐️ add new lint rules to ease migration #2394 Add a new lint rule blueprint-classes-constants to enforce use of Classes.* constants instead of "pt-prefixed-strings". This rule is enabled by default.
  • Also added blueprint-icon-components rule to enforce JSX component or string literal usage for icon props. This rule is disabled by default and has little practical purpose until we ship individual components for the icons A way to only bundle icons you actually use #2193
• removed file-header configuration as it mentioned Palantir

Documentation

• [docs] better flex layout for options #2385 Example options flex responsively
• fix docs site on Firefox ESR #2396 Fix site on older browsers

[llorca]

went through docs examples, looking good 👍

do we want a PSA at the top of the release notes asking consumers to start actioning on 3.0 items? i.e. start converting all your .pt-* classes to Classes.*?

[giladgray]

mm not yet, once we cut 3.0.0-beta.0