Add MATH reasoning tutorial (stanfordnlp#1875)

Switch settings from contextvar to thread local storage (for Colab) (s…

…tanfordnlp#1860)

fix settings contextmanager

add back settings.config

fix settings.py

Convert dspy.settings to a ContextVar, improve ParallelExecutor (isol…

…ate even if 1 thread), and permit user-launched threads (stanfordnlp#1852)

* Convert dspy.settings to a ContextVar, improve ParallelExecutor (isolate even if 1 thread), and permit user-launched threads

* Fixes

Small tutorial adjustment

Introduce Embeddings index, CompleteAndGrounded metric, Unbatchify ut…

…ils (stanfordnlp#1843)

* Introduce Embeddings (faiss NN index), CompleteAndGrounded metric, and Unbatchify utils

* adjust faiss import

* adjust tests

* adjust to dspy.Embedder

Fix dspy.Evaluate's handling of exceptions (from 2.5.30) (stanfordnlp…

…#1839)

Revert settings.py