Add emacsql-sqlite3-unavailable-p.
Simplify all the expanders with new local functions.
Fix up ORDER BY, drop :ascending-by.
Break apart and organize compilation tests.
Add LIMIT and OFFSET expanders.
Fix up README.
Add another insertion unit test.
Add :default column constraint.
Add :check and allow schemas to have variables.
Add table constraints.
Fill out README for new schema table constraints.
Allow sub-selects with :from.
More advanced :from sources, again.