+ ocaml: support IN @x via text substitution
+ sql: support batch insert with syntax INSERT INTO x(...) VALUES @xs
+ sql: rudimentary NULL handling (direct column assignments)
+ sql: multi-table DELETE
+ ocaml: update traits to track read/write nature of ops
* ocaml: cleanup whitespace
* sql: implicitly convert int<->decimal, require explicit cast for float<->decimal
+ sql: more string and window functions
+ sql: CAST, FLOOR, MOD, CONVERT, AS (expr), DROP FOREIGN KEY, ALTER TABLE .. [CONVERT TO] CHARACTER SET .., ALTER TABLE ... ADD CONSTRAINT
* sql: fix table alias handling
+ cli: -static-header
* sql: fix DATE type
* sql: fix ORDER BY with multiple params
