Really make rqlrewrite flake8 compliant

[pyramid] disable bwcompat by default in PyramidCWTest To avoid cubicweb exceptions handling.

Fix flake8 errors in rqlrewrite.py

[rqlrewrite/schema] Avoid parsing computed relations for each query The RQLRelationRewriter is instanciated for each RQL query, it should avoid parsing computed relations formula by using a cache, which seems rightly located on the instance's schema. This brings a *huge* performance boost to some pages on application with a few computed relations (x4 observed on a client app). Kudos to Adrien, David and Sylvain. Closes #17059828

[pkg] Restrict yams version to be less than 0.45.0 This is a backport of 10d3bf220be2 on 3.23 branch

[pyramid] Remove pyramid_debugtoolbar from "pyramid.includes" Most of the times, the package is not installed (not pulled by cubicweb[pyramid] nor pyramid itself) in a fresh environment so that first start of a new instance will fail.

[doc] Add some details about rtag derivation and server api cleanup in release notes

[doc] Simplify release notes section Those are all about backward incompatibilities, keep only one section about that.

[doc] Fill release notes for 3.25

[devtools] Create "newcube" in current directory by default Instead of using "cubes path", which in many cases will be something wrong (like <prefix>/share/cubicweb/cubes) now that cubes are regular Python packages.