Filters for specific casts to either show only or hide listed spell casts
Configurable in the Constructor:
-- set this to false to hide listed spells instead of only showing listed spells
envTable.onlyShowListed = true
-- filter only in specific zones - set to false to always filter
envTable.filterZones = true
Add spells to filter in the envTable.castList table, either as spellID or spellName.
Zones for active filtering can be added / toggled in the envTable.zoneList