2024-02-05: Bug fixes for conversation history, prepdocs auth

The most important bugfix in this release is for conversation history token counting, as that affects most developers. Please file an issue if you seen any bugs around conversation history truncation.

What's Changed

• Improve uses of get, fix temperature bug by @pamelafox in #1225
• Use token provider instead of token wrapper by @pamelafox in #1228
• Consider system prompt in calculations by @pamelafox in #1233

Full Changelog: 2024-02-01...2024-02-05