Azure Pipelines now supports Linux/ARM64

[Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/) now supports Linux/ARM64, as was highly requested by the community. Other key features to enhance the overall user experience are now available: **General** * [Restrict new user invitations from project and team administrators](https://docs.microsoft.com/en-us/azure/devops/release-notes/2020/sprint-171-update#restrict-new-user-invitations-from-project-and-team-administrators) **Azure Boards** * [State transition restriction rules (in private preview)](https://docs.microsoft.com/en-us/azure/devops/release-notes/2020/sprint-171-update#state-transition-restriction-rules-private-preview) **Azure Pipelines** * [Additional agent platform: ARM64](https://docs.microsoft.com/en-us/azure/devops/release-notes/2020/sprint-171-update#additional-agent-platform-arm64) * [Tag filter support for pipeline resources](https://docs.microsoft.com/en-us/azure/devops/release-notes/2020/sprint-171-update#tag-filter-support-for-pipeline-resources) * [Control which tasks are allowed in pipelines](https://docs.microsoft.com/en-us/azure/devops/release-notes/2020/sprint-171-update#control-which-tasks-are-allowed-in-pipelines) Learn more about [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines/). * Features