* Ensure JavaScript exceptions bubble up

* Fix segfault

* Fix mutex segfault

* Fix segfault caused by memory leak

If the database was being closed, and non-exclusive work was scheduled,
it overrode the lock flag such that the state became open=false locked=false
instead of open=false locked=true. This caused queued work to not be
processed, leaking memory, which causes a segfault during napi cleanup.

Make the same changes to other methods for safe measure.

- This updates the README to be inline with what's in master

Change-Id: I79000463955d16eec8809c870f7d02c60da53432
Bug: https://github.com/mapbox/node-sqlite3/issues/418
Relate-to: https://github.com/mapbox/node-sqlite3/pull/1028
Origin: https://github.com/tizenteam/node-sqlite3
Signed-off-by: Philippe Coval <rzr@users.sf.net>

ci: remove permissions UAC

prebuilt: remove Node v10.x

* ci: add electron 8.1 & 8.2 (Linux & MacOS)
* prebuilt: add electron 8.1 & 8.2 (Windows)