Partial fix for https://github.com/kaby76/AntlrVSIX/issues/100. The problem was that the Defs, Refs, ColorizedList, and PopupList were not cleared out. So, when items were being added, an exception would occur due to the key already in the list.
Partial fix for https://github.com/kaby76/AntlrVSIX/issues/100. The problem was that the Defs, Refs, ColorizedList, and PopupList were not cleared out. So, when items were being added, an exception would occur due to the key already in the list.

kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX,kaby76/AntlrVSIX