add links to the individual issue trackers

[devoncarew]

• add links to the individual issue trackers from the main readme and the package pubspec files
• normalize the PR labeller config

---

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Contribution guidelines:

• See our contributor guide for general expectations for PRs.
• Larger or significant changes should be discussed in an issue before creating a PR.
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[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:intl	0.20.0	ready to publish	intl-v0.20.0
package:intl4x	0.10.1	already published at pub.dev
package:intl_translation	0.20.1-wip	WIP (no publish necessary)
package:messages_shrinker	0.2.2-wip	WIP (no publish necessary)

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions]

PR Health

Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?
intl	None	0.20.0	0.20.0	0.20.0	✔️
intl4x	None	0.10.1	0.10.1	0.10.1	✔️
intl_translation	None	0.20.1-wip	0.20.1-wip	0.20.1-wip	✔️
messages_shrinker	None	0.2.2-wip	0.2.2-wip	0.2.2-wip	✔️

Coverage ✔️

File	Coverage

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API leaks ⚠️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbols
intl	StringStack DateBuilder
intl_translation	Message MainMessage

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License Headers ✔️

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// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

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pkgs/messages/examples_flutter/my_application/lib/src/empty_de.dart
pkgs/messages/examples_flutter/my_application/lib/src/empty_en.dart