* Use parseFunctionParams to parse method parameters
* [funct] Set this.state.inGenerator before parsing the function name/params
This allows "yield" inside generator parameters to be actually
parsed as a yield expression
* [funct] Disallow yield in function parameters
* [arrow] "yield" can start an arrow function (e.g. "yield => {}")
* [arrow] Disallow YieldExpressions inside arrow parameters.
* [err msg] Disallow yield as fn name in strict mode using checkReservedWord.
So Babylon throws "yield is a reserved word" instead of
a custom "Binding yield in strict mode"
* [err msg] "X is reserved in strict mode" should have precedence over "X is reserved", since it is more specific.
This was observable if "checkKeywords" is true and the word is both a keyword and a reserved
word in strict mode
* Disallow "yield" as an identifier inside generators
* [tests] Add tests, update wrong esprima tests and enable disabled esprima tests
* [tests] Move uncategorized tests to es2015/yield
* [tests] Update test262 whitelist
* Fix regression introduced by 8c77073
* [tests] Update flow whitelist
* Fix flow errors
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