4.0.0

• Change method signature for RecordingRandomAccessFile._close to return a
  Future<void> instead of Future<RandomAccessFile>. This follows a change in
  dart:io, Dart SDK 2.0.0-dev.40.

3.0.0

• Import dart:io unconditionally. More recent Dart SDK revisions allow
  dart:io to be imported in a browser context, though if methods are actually
  invoked, they will fail. This matches well with package:file, where users
  can use the memory library and get in-memory implementations of the
  dart:io interfaces.
• Bump minimum Dart SDK to 1.24.0

2.3.7

• Fix Dart 2 error.

2.3.5

• Fix internal use of a cast which fails on Dart 2.0 .

2.3.4

• Bumped maximum Dart SDK version to 2.0.0-dev.infinity

2.3.3

• Relaxes version requirements on package:intl

2.3.2

• Fixed FileSystem.directory(Uri), FileSystem.file(Uri), and
  FileSystem.link(Uri) to consult the file system's path context when
  converting the URI to a file path rather than using Uri.toFilePath().

2.3.1

• Fixed MemoryFileSystem to make File.writeAs...() update the last modified
  time of the file.

2.3.0

• Added the following convenience methods in Directory:
  • Directory.childDirectory(String basename)
  • Directory.childFile(String basename)
  • Directory.childLink(String basename)

2.2.0

• Added ErrorCodes class, which holds errno values.