[notification] avoid leaking cnxsets (closes #3243810) When sending notifications, we get each recipient as either an email address or a CWUser. In the latter case, we create a temporary session for that user and use it to send the mail. However, if we later decided to not send the mail after all, we'd leak the session and its cnxset. Add a try block inside the loop to make sure the temporary sessions are closed properly.

[book] English fix

[serverctl] complete the schema-diff command with options that will fix & enhance it. Notably: - filter out eids (doesn't make sense for the filesystem schema) - handle permissions, trying to detect the default ones Needs yams #174042. Closes #2996547.

[server] deprecate the old multi-source system It is removed in 3.19. Closes #2919299

[doc] document changed attribute default value storage

defaultval migration for sqlite

[schema] store default attribute values in a Bytes field, allowing python objects as default values Notes: * Binary objects grow two methods * we depend on a newer yams version * the code is quite simplified as a result of the whole change * a very old and nasty bug where bool(default values) evaluating to False not being properly migrated is killed Closes #2414591.

[source/native] fix sqlserver pattern matcher for unique constraints (closes #3227593) The matcher is used to parse the low-level error message and extract meaningful information for the end users. If broken, the users see an alarming and bewildering message. A full & definitive fix is scheduled for CubicWeb 3.18.

[dbapi] Fix broken inmemory:// URLs parsing (closes #3225832) ParseResult.path is what comes after the "domain name" in standard URLs. So in the case of 'inmemory://<instance' URLs, it is always empty. ParseResult.netloc contains the "domain name" part that we really want.

[metadata hook] rename an operation for the sake of readability

[book] Typo fix and rephrasing in devrepo/migration

[cwshell] rename history file to .cwshell_history (erudi is dead, long live cw)