v0.2.5

Added

• Support for endpoints whose success body is a bare top-level JSON scalar, via a ScalarResponse[T]
  response wrapper.

Fixed

• user_account.get_charting_enabled now returns bool. The endpoint returns a bare scalar
  (true) but was typed as ResponseModel, so every call raised a response-parse error (#24).

Also verified (no change needed): the six market.get_price_*_{after,before,between}_date*
endpoints parse correctly through the typed client; the audit's HTTP 400s were placeholder inputs,
not a bug. A regression read-case was added.

See CHANGELOG.md.