* Add check for `phone-context`.

Add a check to PhoneNumberUtil that the value of the `phone-context` parameter of the tel URI follows the correct syntax as defined in [RFC3966](https://www.rfc-editor.org/rfc/rfc3966#section-3).

* Add check for `phone-context`.

Add a check to PhoneNumberUtil that the value of the `phone-context` parameter of the tel URI follows the correct syntax as defined in [RFC3966](https://www.rfc-editor.org/rfc/rfc3966#section-3).

* Add check for `phone-context`.

Add a check to PhoneNumberUtil that the value of the `phone-context` parameter of the tel URI follows the correct syntax as defined in [RFC3966](https://www.rfc-editor.org/rfc/rfc3966#section-3).

* [maven-release-plugin] prepare release v8.13.7

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.13.6

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.13.5

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.13.4

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.13.3

* [maven-release-plugin] prepare for next development iteration

Co-authored-by:  <amergey@gmail.com>
Co-authored-by: Tijana Vislavski Gradina <tijanavg@google.com>

* [maven-release-plugin] prepare release v8.13.2

* [maven-release-plugin] prepare for next development iteration

* Demo enhancements

* Update Demo portal

* Cleaning up auto generated, not very relevant archetype contents

* pom.xml ordering

* Cleanuping up unwanted changes

* Cleanuping up unwanted changes

* Update README

* Demo enhancements

* Updates after migration to Soy

Co-authored-by: Aravind <penmetsaa@google.com>

* [maven-release-plugin] prepare release v8.13.1

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.13.0

* [maven-release-plugin] prepare for next development iteration

This reverts commit d0716544c6.

* [maven-release-plugin] prepare release v8.13.0

* [maven-release-plugin] prepare for next development iteration

Remove unused leading_zero_possible field from phonemetadata.proto

Deleted all methods that refer to this.
Regenerated jars - because we no longer write a boolean for the removed proto field, all the java metadata files needed regenerating too.

* appengine-api-1.0-sdk --> appengine-maven-plugin

* readme

* relative path instead of absolute

Co-authored-by: penmetsaa <penmetsaa@google.com>
Co-authored-by: Tijana Vislavski Gradina <tijanavg@google.com>

* Using precompiled templates with SoySauce instead of Tofu runtime interpreter

* Use renderHtml() instead of renderText()

Co-authored-by: Tobias Rogg <26879902+roggnroll@users.noreply.github.com>

Co-authored-by: Tobias Rogg <26879902+roggnroll@users.noreply.github.com>

* [maven-release-plugin] prepare release v8.12.57

* [maven-release-plugin] prepare for next development iteration

Migration of Demo to Soy/Closure templates

* [maven-release-plugin] prepare release v8.12.56

* [maven-release-plugin] prepare for next development iteration

* added Mac setup instructions

* [maven-release-plugin] prepare release v8.12.55

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.12.54

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.12.53

* [maven-release-plugin] prepare for next development iteration

- Followup to PR #2773, where we started using official appengine Maven plugin than older ```maven-gae-plugin```
- ```appcfg``` script is deprecated and most of these works can be done through ```gcloud-appengine-sdk```
- More details in cl/333435946 (where we moved away from ```appcfg``` during the releases) and cl/xxxxx (We no more need any manual copy jar commands)

* [maven-release-plugin] prepare release v8.12.51

* [maven-release-plugin] prepare for next development iteration