package:dart_style v2.3.7

• Allow passing a language version to DartFomatter(). Formatted code will be
  parsed at that version. If omitted, defaults to the latest version. In a
  future release, this parameter will become required.
• Allow opting out of formatting for a region of code using // dart format off
  and // dart format on comments. Note: This only works using the new tall
  style and requires passing the --enable-experiment=tall-style experiment
  flag (#361).
• Preserve type parameters on old-style function-typed formals that also use
  this. or super. (#1321).
• Correctly format imports with both as and if clauses (#1544).
• Remove temporary work around for analyzer 6.2.0 from dart_style 2.3.6.
• Require package:analyzer >=6.5.0 <7.0.0.

package:dart_style v2.3.6

• Fix compile error when using dart_style with analyzer 6.2.0.

package:dart_style v2.3.5

• Ensure switch expressions containing line comments split (#1404).
• Use language version 3.3 to parse so that code with extension types can be
  formatted.
• Support formatting the macro modifier when the macros experiment flag
  is passed.

package:dart_style v2.3.4

• Add tall-style experiment flag to enable the in-progress unstable new
  formatting style (#1253).
• Format extension types.
• Normalize ignored whitespace and "escaped whitespace" on first line
  of multiline string literals. (#1235)

package:dart_style v2.3.2

• Don't indent parameters that have metadata annotations. Instead, align them
  with the metadata and other parameters.
• Allow metadata annotations on parameters to split independently of annotations
  on other parameters (#1212).
• Don't split before . following a record literal (#1213).
• Don't force split on a line comment before a switch expression case (#1215).
• Require package:analyzer >=5.12.0 <7.0.0.
• Preserve ? on nullable empty record types (#1224).