Release v8.1

[ddemeyer]

Continuation of #151

PRERELEASE

• Create a new Milestone... done, see https://github.com/RWS/ISHRemote/milestone/15
• Start and edit release notes on https://github.com/sdl/ISHRemote/releases/
  • All issues/changes should be listed, crosslinked to issue with potential Thank you
  • Examples added where possible
• Start and edit a blog post when significant changes happen that need extra explanation. Do this under https://github.com/RWS/ISHRemote/tree/master/Doc like https://github.com/RWS/ISHRemote/blob/master/Doc/ReleaseNotes-ISHRemote-8.1.md
• Prerelease/Preview builds can be done by adding a commit message titled [PublishToPSGalleryAsPreview] to publish to to PSGallery on https://www.powershellgallery.com/packages/ISHRemote/
• Run Pester tests on various product versions and flavours ... Windows PowerShell, PowerShell on Windows/MacOS/Linux

RELEASE

• Release builds can be done by adding a commit message titled [PublishToPSGalleryAsRelease] to publish to PSGallery on https://www.powershellgallery.com/packages/ISHRemote/, see main README.MD
• Upon successful build and publish, "Publish Release" https://github.com/RWS/ISHRemote/releases matching version, so source control gets labels, etc.
• Use https://github.com/RWS/ISHRemote/blob/master/Doc/ReleaseNotes-ISHRemote-8.1.md for an internal Confluence blogpost
• Use https://github.com/RWS/ISHRemote/blob/master/Doc/ReleaseNotes-ISHRemote-8.1.md for a Community blogpost

POSTRELEASE

• Close the github Milestone
• Prepare for PRERELEASE again, by duplicating this issue... assign new version numbers and Milestones. Bump version to 8.2.0 in source control and build. New ReleaseNotes-ISHRemote-8.2.md, etc
• Close this issue