package_resolver

• Bump minimum SDK constraint to one that includes Future in
  dart:core.
• Remove all dart:async imports which are no longer required.
• Merge in branch that published as 1.0.9 to include changelog

• Use conditional imports to avoid dart:isolate imports on the web.
• Bump minimum SDK to 2.1.0.

• Identical to 1.0.6 - republishing with a higher version number to get around issues with conditional dart:isolate imports on the version of build_modules which is compatible with the 2.0.0 SDK.

• Fix issue on Dart 2.0.0.

This is specified as not existing on the web platforms, although in
practice it can be imported an at least one API works on DDC but not
dart2js. Since this may become more strict, use conditional imports with
an explicitly non-working fallback when dart:isolate is not available.

• Make CurrentIsolateResolver private and add a top level method
  instead since it is easier to stub.
• Rename util_stub.dart to util_io_sub.dart to avoid confusion
  against the new util_isolate_stub.dart.

• Use conditional imports to avoid dart:isolate imports on the web.

Fixes #23

support package:http version 0.12.x (#20)

• Support package:http version 0.12.x.

use conditional imports to avoid dart:io imports on the web (#19)

• Use conditional imports to avoid dart:io imports on the web.

• Set max SDK version to <3.0.0, and adjust other dependencies.

• Update SDK version.
• Stop using deprecated UTF8 constant.

• Don't crash on URIs without path components.

• Internal changes only.

• Initial version.