Updated the instructions for Windows builds: things should "just work" if they click "Automatically install the necessary tools" and follow the instructions.
As I just learned, having spaces in the path of the directory which you are running `npm i better-sqlite3` can cause issues with installation, presumably because, according to the error message, it does not insert escapes for characters like spaces.
removed the integer library in favor of bigints
added support for worker threads
enabled SQLITE_THREADSAFE=2
replaced native Require() calls with dependency injection
