Closes #4131

Closes #4130

Closes #4128

Closes #4122

Since the only pre-build version of csslint was changed to some
global-scope-polluting mess that breaks our module loader headers.

Issue #4123

Issue #4112

To match the actual match-highlights in the editor.

Closes #4105

In some cases, on wrapping points, they span the whole line

Issue #4097

Chrome would show the IME widget too high because it noticed the textarea
was cut off by the wrapping DIV.

Issue #4095

In Replace mode (or Overwrite mode) it should still go backwards
without deleting characters.

- Images now come with tons of information to style them. This mainly
  enables to style alt-texts and potentially make them look like links.
  While still differentialting between links and images.

Closes #4082

Closes #4090

Closes #4087

Closes #4080

and remove autocomplete bindings

Closes #4085

See https://discuss.codemirror.net/t/range-error-with-scrollpastend-addon/773

Issue #4069

Issue #4078

It is, per https://golang.org/ref/spec#Predeclared_identifiers

Closes #4064.

Closes #3888
Closes #4063.

Issue #4038