These dates are week-specific to give some flexibility during the release process which frequently happens. I back-dated the most recent minors mainly to make sure we include them when we eventually update to v16 and beyond.

PR Close #47513

…heck (#47480)

Previously, this check was wrong as typeof returns a string.

PR Close #47480

This adds new PR template responses for dealing with rebases and commit header changes.

PR Close #47515

PR Close #47507

PR Close #47542

Fixes that the `node` typings weren't included in the rxjs 7 typings test.

PR Close #47548

This commit adds more information on what is collected by the Angular CLI as with angular/angular-cli#23718 we will collect additional information.

PR Close #47529

PR Close #47532

…gnostics (#47508)

When reporting type-checking diagnostics in external templates we create a
`ts.SourceFile` of the template text, as this is needed to report Angular
template diagnostics using TypeScript's diagnostics infrastructure. Each
reported diagnostic would create its own `ts.SourceFile`, resulting in
repeatedly parsing of the template text and potentially high memory usage
if the template is large and there are many diagnostics reported. This commit
caches the parsed template in the template mapping, such that all reported
diagnostics get to reuse the same `ts.SourceFile`.

Closes #47470

PR Close #47508