What's new in CubicWeb 3.16?

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New functionnalities

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* Add a new dataimport store (`SQLGenObjectStore`). This store enables a fast

  import of data (entity creation, link creation) in CubicWeb, by directly

  flushing information in SQL.  This may only be used with PostgreSQL, as it

  requires the 'COPY FROM' command.

API changes

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* db-api/configuration: all the external repository connection information is

  now in an URL (see #2521848), allowing to drop specific options of pyro ns

  host, group, etc and fix broken ZMQ source. Configuration related changes:

  * Dropped 'pyro-ns-host', 'pyro-instance-id', 'pyro-ns-group' from client side

    config, in favor of 'repository-uri'. **NO MIGRATION DONE**, supposing there

    is no web-only config in the wild.

  * Stop discovering the connection method through `repo_method` class attribute

    of the configuration, varying according to the configuration class. This is

    a first step on the way to a simpler configuration handling.

  DB-API related changes:

  * Stop indicating the connection method using `ConnectionProperties`.

  * Drop `_cnxtype` attribute from `Connection` and `cnxtype` from

    `Session`. The former is replaced by a is_repo_in_memory property

    and the later is totaly useless.

  * Deprecate `in_memory_cnx` which becomes useless, use `_repo_connect` instead

    if necessary.

Unintrusive API changes

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* Drop of `cubicweb.web.uicfg.AutoformSectionRelationTags.bw_tag_map`,

  deprecated since 3,6.

User interface changes

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* Remove changelog view, as nor cubicweb nor known cubes/applications were properly

  feeding related files