[TECH MGMT] Develop release process(es) for Starter Site, Playbook, and ISLE.

[rosiel]

Overview

We should really be versioning the Playbook, ISLE, and the (new) Islandora Starter Site. Since the first two provide the environment for the third, they form a pretty closely coupled trio.

Can we please use some kind of structured versioning? It would make it much easier in Composer, and could make "what version are you on" something we can talk about.

What kind of user is the feature intended for?

This is a thing we should have for everyone who's using the software. Generally it would help us mature as a software project.

What inspired the request?

The launch of the Starter Site - and accompanying ISLE and Playbook PRs.

• ISLE PR: Starter site integration Islandora-Devops/isle-dc#287
• Playbook PR: Starter site integration Islandora-Devops/islandora-playbook#226

The thought "This would be a good place to cut a release" crossed our minds but we don't know of a policy, so we should make one.

What existing behavior do you want changed?

The behaviour of using "dev-" branches of everything. Let's get stable!

Any brand new behavior do you want to add to Islandora?

Yeah you could be on "a stable release" of Islandora (to some degree)

Any related open or closed issues to this feature request?

This covers:

• Propose a release process and schedule for ISLE #1987

This relates to:

• Islandora Software Release workflow #1894