Bundled libraries upgrade 'process'

Hi Internals, I just investigated an alleged bug related to the SQLite3 extension. It seems this bug occurs when PHP is compiled with the current bundled SQLite files, which are a little out of date as they are version: "3.15.1", date: "2016-11-04". Listed at https://sqlite.org/changes.html there are multiple versions that SQLite could be upgraded to. * 2016-11-28 (3.15.2) - small bugfix upgrade. * 2017-06-08 (3.19.3) - bigger upgrade that has performance improvements. Questions: 1. Do we have a process for deciding whether to upgrade bundled libraries? 2. Can anyone see anything in the release notes that would be a problem for upgrading past 3.15.2 ? 3. Do we have a process for getting feedback from users about whether a proposed upgrade would cause problems, other than doing the upgrade and shipping it? I can't see anything listed in the SQLite release notes that would cause a problem.....but that's obviously not the same as being sure an upgrade wouldn't cause problems. cheers Dan Ack