Is there anywhere to view change notes for the Plugin API between versions?
In particular, we were using com.intellij.ide.plugins.PluginManager to get the current version of the plugin being used, which appears to have been removed, hence the plugin no longer compiles. Update: have found PluginManagerCore, which seems to provide the same functionality - EL resolution still broken though.
My major that I'm seeing (which led me to discover the above, I (was) hoping they were linked) is that I recently implemented custom EL variables in my plugin (per https://intellij-support.jetbrains.com/hc/en-us/community/posts/360006660119-Custom-EL-variable-marked-as-unresolved-in-Ultimate-despite-PsiReferenceContributor), and those are no longer working.
Having gotten the plugin compiling again as per above, it seems that my ElVariablesProvider is not being called - it's currently being registered as per below, has this changed?
With dependencies on: