Whitespace
Array offset (inspired by Promeo)
Typo
Avoid INNER JOIN (predictability, over-optimized)
Allow GPL
Stricter identifier detection (closes #7)
Allow grouping functions in fetchPairs (thanks to bojovyletoun)
Pass parameters of subselects (thanks to bojovyletoun)
Use ordinal position in fetchPairs (thanks to bojovyletoun)
Error checking
Empty tag.name is not allowed (thanks to vitas)
Foreign keys may be disabled (thanks to vitas)
Extended insert doesn't work in SQLite (thanks to vitas)
Centralize driver detection
No brackets in UNION for SQLite and Oracle (thanks to vitas)
Respect original select in fetchPairs (thanks to Juraj Krivda)
Rename through to via (BC break, thanks to Tomas Fejfar)
Comment
Specify sequence name for some databases
Fix MultiResult::fetchPairs