[1.18.2] 2.7.0

WARNING: This version contains breaking changes, dependents will likely need to be updated to support these. Commits in alpha 2.7.0:

[docs] Remove mkdocs workaround (upstream was fixed)
[config] Support references to other configs
[base] Allow specifying custom adapters
[config] Category support pt 1
[config] Category support pt 2
[config] Improve reset button
[config] Rework to run without unlocking the classpath (this will require dependents to be updated!)
[config] Expose new features through /libjf config command
[config] Expose tooltips/titles as comments in json

LibJF