textwrap 1.2.0

Text wrapping and filling. It's a pure port of textwrap from Python.

1.2.0

• Minimal SDK version: 2.18.0.
• Refactoring.

1.1.0

• Pattern.split no empty trailing strings.

1.0.2

• internal changes.

1.0.1

• update meta & dart format.

1.0.0

• initial release.