Overhaul of SQLHelper, refactored into new package redempt.redlib.sql
- BREAKING: Update references to SQLHelper before updating RedLib!
- Added method SQLHelper#setCommitInterval to commit periodically
- Rewrote ItemTrait#compare for ItemTrait.NAME and ItemTrait.LORE to make them not call ItemStack#getItemMeta on items which did not already have ItemMeta
- Created SQLCache, which allows you to easily cache values in a SQL database to avoid unnecessary SQL queries