Major changes:
1) Instead of skipping undesirable scopes, include them and mark them
with errors. Constants can be extracted into more scopes.
2) Update the tests to call through the "public" API. This caused some
baseline changes.
3) Rename refactoring to "Extract Symbol" for generality.
4) Return a second ApplicableRefactorInfo for constants. Distinguish
the two by splitting the action name.
* Handle translation between new and old log format styles
* Iteration
* Strip all backcompat
* Remove new parenthesis
* Handle directories in the test perf heuristic measurement
* Optional catch bindings!
* Handle @typedef tag with missing type
* Add single quotes to diagnostic
* Remove redundant jsdoc checking (now done on every source element)
* Update baselines
* Always generate type & symbol baselines
* Accept changed shadowed baselines
* Accept brand new type and symbol baselines
* Allow `getTypeAtLocation` to return undefined in the type writer
* Accept baselines which had missing type information
* Bind container for dynamically names enum members so they may be printed
* Accept type/symbol baselines for enums with computed members
* First pass at reducing typeWriter memory overhead
* Use generators to allow for type and symbol baselines with no cache
* Accept new baselines for tests whose output was fixed by better newline splitting
* Hard cap on number of declarations printed, cache declaration print text
* handle differing newlines better still to handle RWC newlines
* Lower abridging count, accept abridged baselines
* Limit max RWC error output size, limit RWC type and symbol baseline input size
* Move skip logic into type and symbol baseliner to streamline error handling
* Accept removal of empty baselines
* Canonicalize path earlier to handle odd paths in input files
* Do canonicalization earlier still, also ensure parallel perf profiles for different targets do not trample one another
* No need to pathify again
* Keep a small reserve of tasks to not-batch, so all threads can have an initial task"
* Assign no weight to new tests, but still place them at the end of the list
* Avoid calling `indexOf` when checking array element types
* Add 'indexOfNode' and use it in cases which may handle long lists. (#18635)
* Fix bug where contextual type was not reused if undefined
