Adjust reasoning model token requirement (stanfordnlp#8750)

Validate GEPA metric signature (stanfordnlp#8697)

* Validate GEPA metric signature

* Update gepa.py

* Update gepa.py

Update use-cases.md (stanfordnlp#8646)

Update GEPA's reflection_lm (stanfordnlp#8633)

* Update reflection_lm

* Ruff

update deduplicate (stanfordnlp#8623)

Since python 3.6 Dict are ordered, the former source has been updated to new method of deduplication in 2017.  
The gain is quite significant for example:
FUNCTION                   MEAN (ms)       MEDIAN (ms)
dict version (new)           124.5                  123.6
set version   (old)            165.5                  171.8

Update pyproject.toml

update doc (stanfordnlp#8476)

Remove community retrievers (stanfordnlp#8073)

* remove community retrievers

* lint

Merge branch 'release-2.6.27a1'

fix BaseType annotation check (stanfordnlp#8318)