Work around a SQLITE bug that resets the database busy timeout
after a successful query. Now we set the timeout after each database
operation. The timeout can now also be set via the
R_LITEQ_BUSY_TIEMOUT environment variable, and it defaults
to 10 seconds, instead of 1 second.
consume() now has a poll_interval
argument to set how often to poll the queue for new jobs.
New is_empty() and message_count()
functions (#18, @wlandau).
Get rid of annoying warning about closing unused connections (#15, #20, @wlandau).
LITEQ_CACHE_DIR environment variable to change
the default cache directory.First public release.