Amend README and .htaccess files.
Add some utility functions.
Add sql-schema plugin files.
Add support for SQLite.
Merge branch 'sqlite-driver' into schemata
Work on shaping the SQL schema class structure.
Add SQL notes file.
Merge branch 'schemata'
Make a bunch of fixes to the core library.
Add array operator utils.
Work up to the array_diff functions.
Work up to array_shift.
Work up to array_values.
Work up to count.
Work up to ksort.
Finish array functions.
Revise array and func utils.
Add profiler class.
Improve struct class.
Add singleton class.