Thank you to Roger Binns http://www.rogerbinns.com/ for the excellent APSW library, and to the SQLite development team https://www.sqlite.org/crew.html for having created a whole industry.
Some open source tools are distributed along with Crab for convenience. Use of these tools is optional.
Full source can be found here: https://github.com/hanslub42/rlwrap
Full source can be found here: ftp://ftp.gnu.org/gnu/readline/
Readline released under under the terms of the GNU General Public License, version 3. http://www.gnu.org/licenses/gpl.html