* master:
  update `regenerator-runtime` in `babel-polypill` (babel#4966)
  Temp fix for make watch [skip ci] (babel#4967)
  Add (and fix) failing test of function parameter bindings in a catch block (babel#4880)
  Upgrade regenerator-runtime to version 0.10.0. (babel#4877)
  Add `/.test` and `/src` to `babel-plugin-transform-regenerator` `.npmignore`. (babel#4961) [skip ci]
  Only base async fn arity on non-default/non-rest params - fixes babel#4891 (babel#4901)
  Add generator support for Import (babel#4945)

Throws in v8 with "Invalid property descriptor. Cannot both specify
accessors and a value or writable attribute"

I guess this is why the spec defines "magic changing values" instead of
getters 😅

Repeat the shorter identifier in the block.

Mostly for testing interaction of the transform with other es2015
plugins.

If they're named, they can be modified, so the binding has to be kept
live.

…prots

* master:
  make installing runtime/transform-runtime clearer [skip ci] (babel#4991)
  Add example to es2015-unicode-regex [skip ci] (babel#4983)
  v6.20.3
  Calculate the correct arity for async functions with destructuring - fixes babel#4977 (babel#4978)
  v6.20.2
  fix object spread (babel#4976)
  fix clean lib
  update readme [skip ci]
  v6.20.1
  Fix nested object spread (babel#4974)
  v6.20.0
  v6.20.0 changelog [skip ci] (babel#4971)
  Raise limit on code size before compacting (babel#4965)
  Use regenerator-transform to implement babel-plugin-transform-regenerator (babel#4881)
  Add getBindingIdentifierPaths/getOuterBindingIdentifierPaths (babel#4876)
  Hoist generateDeclaredUidIdentifier helper function (babel#4934)

Even if the path.remove did work, the import would have been deleted
without generating the corresponding require.

* modules-commonjs-spec: (67 commits)
  Remove accidental !
  Be more proactive with the Invalid import throw
  Convert spec-test-helpers to ES6
  Avoid calling scope.getBinding on Flow types
  Remove unused variable, update fixture
  Huge refactoring; reimplement spec / specImport modes with visitors
  Build the babel-runtime dist scripts from current code
  transform-runtime: flag blacklisted helpers for skipping transform
  Allow the helperGenerator hook to return the helper itself
  Fix order in options.json; test still failing
  Add failing test (fix TODO)
  Fix crash when processing ThisExpression
  Update fixtures
  Use a helper for the SameValue check
  Update fixtures
  Use better SameValue algorithm
  Use propertyIsEnumerable instead of getOwnPropertyDescriptor
  Add missing before hooks; fix tests failing on Node < 6
  make installing runtime/transform-runtime clearer [skip ci] (babel#4991)
  Check if renamed reexports are correctly exported
  ...