Prepare for dartdoc 1.0.0 (dart-lang#2710)

* changelog/pubspec

* rebuild and clean up changelog

* add reference to 2697 before I forget

* Update changelog to reflect latest head changes

* Version 1.0?

Prepare for dartdoc 0.45.0. (dart-lang#2668)

Prepare for version 0.44.0. (dart-lang#2656)

Prepare for dartdoc 0.43.0 (dart-lang#2640)

* intermediate

* Update CHANGELOG

* Rebuild

* rewrap changelog

Prepare for dartdoc 0.42.0. (dart-lang#2604)

* Prepare for dartdoc 0.42.0.

* update changelog for 2605

Prepare for dartdoc 0.41.0. (dart-lang#2589)

* Prepare for dartdoc 0.41.0.

* Revert everything but analyzer

* Disable coverage?

* Turn back on coverage to get a good debug log

* await coverage before quitting

* Re-update all packages and disable coverage

* Update changelog

* Update changelog One More Time

Prepare for dartdoc 0.40.0 (dart-lang#2543)

Prepare for dartdoc 0.39.0. (dart-lang#2480)

* Prepare for 0.39.0

* trivial formatting change

Prepare for 0.38.0. (dart-lang#2451)

Prepare for dartdoc 0.37.0 (dart-lang#2435)

* Prepare for dartdoc 0.37.0

* Update changelog for dart-lang#2434