* Minor README fixes (openid#351)

Thanks to @celphy for spotting these mistakes.

* Add WeWork to AUTHORS

WeWork, as my employer, is now the copyright owner for my
contributions to AppAuth.

* Dependency version bump

* Handle CustomTabsSession.newSession failures

Fixes openid#315.

* Enable Java 8 language features

* Do not automatically pass scope on token exchange request

Fixes openid#297.

* Do not override tab title setting

Fixes openid#358.

* Firefox customtabs (openid#378)

Add support for custom tabs in Firefox. Support for custom tabs was added to stable Firefox in version 57.0

Fixes: openid#368
Signed-off-by: Henning Nielsen Lund <henning.n.lund@jp.dk>

* Respect default browser of the user (openid#379)

Correctly orders the user's preferred browser to the start of the returned list.

* Custom Tabs was first added in Samsung Internet 4.0 (openid#383)

At the moment all versions of the Samsung Internet Browser is set to support Custom Tabs. Support for Custom Tabs was first added in version 4.0.

fixes: openid#382

* add getBrowserDescriptor() (openid#388)

Make it possible to get the BrowserDescriptor used by AuthorizationService.

fixes: openid#387
Signed-off-by: Henning Nielsen Lund <henning.n.lund@jp.dk>

* Android gradle plugin version bump

* Implement ID Token validation according to OIDC spec (openid#385)

Validate ID Tokens (if any) on TokenResponses according to http://openid.net/specs/openid-connect-core-1_0.html#IDTokenValidation

* Add Øyvind to the contributors list

* Update CONTRIBUTORS with email (openid#397)

* Use CustomTabsService.ACTION_CUSTOM_TABS_CONNECTION in BrowserSelector. (openid#411)

* This helps with the jetification. I produced an artifact locally,
  and wrote a sample app using:

  ```gradle
  implementation 'androidx.appcompat:appcompat:1.0.0-rc02'
  implementation 'androidx.browser:browser:1.0.0-rc02'
  ```

  to make sure that the app works.

Fixes: openid#395

* Issue openid#402: fixes NPE in case input stream is null (openid#414)

* Fix spelling mistake

* Update link to custom tabs documentation

* Fix typo in README.md (openid#455)

* Fix `Using access tokens` snippet in the readme (openid#510)

The snippet code in the `Using access tokens` section didn't follow java code formatting.

* Use capitalized form for "Bearer" token type

While this is case-insensitive, some provider implementations do not correctly handle the lower case form.

* Migrate to AndroidX & Update dependencies (openid#508)

* gradle update to 5.4.1

* gradle plugin update to 3.5.3

* minor bintray update

* bump compile sdk to 29

- this requires bumping build tools to 29
- also updating the gradlewrapper (again, fully) to 5.4.1

* Migrate to AndroidX

This required changes to checkstyle & javadocs gradle files
(perhaps because of jetifier? not sure tbh)
Also mockito now can mock all final classes

* Fix compiler warning

* update travis build tools to 29.0.2 to align with build.gradle

* update travis android sdk version to 29 to align with build.gradle

* Android11 support (openid#558)

- Migrated from the deprecated Android Support libraries to the newest versions of the AndroidX libraries.
- The Android gradle plugin is updated to the current 4.0.0.
- Glide is updated to the current 4.11.0, and 4.1x.x is needed for AndroidX support.
- limit the allowed queries to only fullbrowsers - openid#554 .
- Add support for CATEGORY_APP_BROWSER.
- Update dependencies

* Deprecate whitelist and blacklist (openid#555)

* Replace BrowserBlacklist with BrowserDenyList and BrowserWhitelist with BrowserAllowList

* Add xmlpull library dependency for tests because some of the unit tests fail without it.

* Override constructors and add a deprecation migration test

* Update library version to 0.8.0-skyscanner

* Fix build after upgrading gradle plugin (as result of syncing up with openid repo)

Co-authored-by: Iain McGinniss <iainmcgin@gmail.com>
Co-authored-by: Iain McGinniss <iain.mcginniss@wework.com>
Co-authored-by: Henning Lund <40355805+hnljp@users.noreply.github.com>
Co-authored-by: Øyvind Robertsen <oyvindrobertsen@gmail.com>
Co-authored-by: Rahul Ravikumar <tikurahul@users.noreply.github.com>
Co-authored-by: Thomas Rebouillon <thomas.rebouillon@gmail.com>
Co-authored-by: Mark Kowalski <mark.kowalski86@googlemail.com>
Co-authored-by: Ahmad El-Melegy <ahmad.melegy@gmail.com>
Co-authored-by: Paul Blundell <blundell.app.dev@gmail.com>
Co-authored-by: Jon F Hancock <jonfhancock@gmail.com>
Co-authored-by: Athila Santos <athilahs>