[RELEASE] New TSconfig option + various bugfixes
This release drops support for TYPO3 v9, and will only work with TYPO3 v10.
This release will also be most likely the last v3.x release.
The next release will be a major 4.0 release, where the actual ProxyProviderInterfaces will also be adapted, and specific CDN providers will be removed in favor of custom and more extensible solutions (see "akamai", "cloudflare_cdn" and "azure_purge") that ship with custom adapters.
This version brings a few bugfixes along with a new userTSconfig setting:
options.clearCache.proxy = 1
that allows to enable the "Flush CDN Cache" on a per-editor basis for non-admins, or to disable the button for admins as well.