Changes for version 0.25 - 2020-08-11
- When bundling mariadb-connector-c, use the system zlib instead of the bundled one -- potentially sidestepping issues with system-zlib having global symbols changed by the bundled zlib.
- `make distclean` now actually cleans up everything
- Promises Pool no longer uses an XS implementation of caller() to gather stacktraces; instead, implementors can provide whatever stacktrace they want.
- Minor tweaks to the XS code
Nonblocking connections to MySQL using libmariadbclient