Ipphone Core Versions Save

What's Changed

• Attendent transfer SIP headers by @alexrster in https://github.com/ipphone/core/pull/96
• Call notifications extensibility by @alexrster in https://github.com/ipphone/core/pull/97

Full Changelog: https://github.com/ipphone/core/compare/v1.13.0.33...v1.13.3

What's Changed

• Attendent transfer SIP headers by @alexrster in https://github.com/ipphone/core/pull/96
• Call notifications extensibility by @alexrster in https://github.com/ipphone/core/pull/97

Full Changelog: https://github.com/ipphone/core/compare/v1.13.0.33...v1.13.2

• Minor changes to Call notification popup
• Major CI/CD pipeline update

• Minor refactoring for Notifications UI

• Fix WebBrowser plugin configuration window size

• Add WebBrowser plugin to Core installation package

• Stability improvments
• Fix installation

• Migrate to GitHub
• Fix Contacts Book
• Fix Sqlite loader
• Clean up code base