This release allows XKit to run in the neue_web post & reblog interface iframes, allowing extensions that run in the post window (such as Editable Reblogs) to run normally, with little-to-no change to the extensions' code.
NOTE: Firefox may complain about getting a connection error when clicking the below XPI link. If it does, right-click the link and select "Save Link As...", then navigate to about:addons and drag the file onto that screen to install New XKit.
For Chrome: Install from the Chrome Web Store instead of here.