• BUGFIX: fix label join function in builder mode. See this issue.
  Thanks to @yincongcyincong for the pull request.
• BUGFIX: add missing rollup functions to the builder suggestion list. See this issue.
  Thanks to @yincongcyincong for the pull request.
• BUGFIX: properly apply ad-hoc filters for some rollup functions. See this issue.
  Thanks to @yincongcyincong for the pull request.