Dart 2.0 core lib update tracking issue

[leafpetersen]

This is the tracking issue for the Dart 2.0 core lib changes and migration.

More detailed overview of the proposed changes (internal only) here: https://docs.google.com/document/d/1VOJYN557gB6i64-hdrbl2mUYPW7IJA7QOthVWNOmCTY/ .

See the tracking issues below for additional detail.

This will be rolled out in three waves.

• Wave 1: Rename constants to use camel case

  • Introduce new names, deprecate old names
  • Implement migration tooling: Implement tooling for migrating code away from deprecated Dart 1.0 constant names #31822
  • Remove old deprecated names: Tracking issue for removal of deprecated SDK constant names #31813

• Wave 2:

  • 2.1: New methods and signature changes in interfaces of Iterable, List, Set, and Map and Timer
    • Add stubs to packages: Add Dart 2.0 migration stubs to packages that implement Timer, Iterable, List, Set, Queue and Map #31664
    • Fix internal code: Track internally
    • Roll fixes to flutter: Tracking issue for updating Flutter with the wave 2.1 core lib changes #31814
  • 2.2: New methods and signature changes in interfaces of Stream, StreamTransformer, and Converter
    • Add stubs to packages: Add Dart 2.0 migration stubs to packages that implement Stream, StreamTransformer, and Converter #31847
    • Fix internal code: Track internally
    • Roll fixes to flutter: Tracking issue for updating Flutter with the wave 2.2 core lib changes #31816
    • Remove defaultValue: Remove defaultValue from Stream.{firstWhere, lastWhere} #32401
  • 2.3: Tighten signatures of List | Set | Map | Queue | ListQueue .from No longer planned
    • Implement change in a branch: Implement wave 2.3 core lib changes in a branch #31820
    • Fix external packages: Tracking issue for updating third party packages for wave 2.3 core lib changes #31819
    • Fix internal code: Track internally
    • Roll fixes to flutter: Tracking issue for updating Flutter with the wave 2.3 core lib changes #31818

• Wave 3: Miscellaneous changes

  • Add Invocation.typeArguments member: Add typeArguments field to Invocation #32402
  • Add Bigint class to dart:core

• Wave 4: (Non-breaking, land anytime)

  • Add int.clampInt and double.clampInt
  • Add math.max to num.min and num.max
  • Add static methods int.min, int.max, double.min, double.max
  • Add int.>>> instance member

[leafpetersen]

cc @lrhn @anders-sandholm @keertip @grouma @matanlurey @srawlins @floitschG @vsmenon @dgrove @kevmoo @mit-mit @Hixie