merge with stable

[server] add a looping task to free unused cnxsets capture by dead pyro When a pyro client disconnects, we're not necessarily notified so they can hang on to their session/cnxset forever. Don't let them do that. The hacky looping task is only installed when pyro is enabled. This optional activation save this very hacky patch from being rejected. closes #2825380

[pkg/debian] update changelog to 3.17.0

[devtools] Use XMLValidator instead deprecated SaxOnlyValidator The renaming was introduced in 198fdadafed6.o This prevent a meta class conflict introduced by logilab-common 0fcd2e050621.

[pkg] update changelog

[pkg] prepare 3.17.0

[pkg] prepare 3.16.4

[repo] straightforward bootstrap sequence. Closes #2841188 * kill fill_schema method which was doing to much different things, in favor of a deserialize_method which is simply reading schema from the db and returning it * set_schema doesn't bother with cubes This allows to easilly follow what's going on and so to cleanup init_cnxset_pool to get the following boostrap order: 1. load cubes (implies loading site_cubicweb) 2. load schema 3. init data sources 4. init cnx sets

[repo] minor cleanups to bootstrap sequence * fix some docstring/comments * move initialization of HooksManager to the __init__.py, this has nothing to do with pool initialization / boostraping

[schemaserial] serialize additional yams parameter for customs type Yams have a new custom type feature. We add support for extra parameter on CWAttribute in schema serialization handling. Closes #2847151