v3.1.2

Following the previous release, this release adds various bug fixes and performance improvements to the latest GPTR features including image support, documentation, new improved LLM and embedding configuration (shout out to @kesamet!). This release is recommended to all developers.

## What's Changed
* Sanitize filenames file upload/delete by @ethansilvas in https://github.com/assafelovic/gpt-researcher/pull/935
* "hack" to fix AzureOpenAI configuration problem by @danieldekay in https://github.com/assafelovic/gpt-researcher/pull/933
* Added a "Back To Top" Button by @Akhsuna07 in https://github.com/assafelovic/gpt-researcher/pull/937
* Specify embedding provider and model by @kesamet in https://github.com/assafelovic/gpt-researcher/pull/918
* added all changes by @assafelovic in https://github.com/assafelovic/gpt-researcher/pull/942
* Feature/strategic llm by @assafelovic in https://github.com/assafelovic/gpt-researcher/pull/941
* Docs upgrades by @ElishaKay in https://github.com/assafelovic/gpt-researcher/pull/940
* Fix/bing retriever consistency by @ibuder in https://github.com/assafelovic/gpt-researcher/pull/944
* fix/bing-retriever: add missing import statement by @rylincoln in https://github.com/assafelovic/gpt-researcher/pull/948

## New Contributors
* @ethansilvas made their first contribution in https://github.com/assafelovic/gpt-researcher/pull/935
* @Akhsuna07 made their first contribution in https://github.com/assafelovic/gpt-researcher/pull/937
* @ibuder made their first contribution in https://github.com/assafelovic/gpt-researcher/pull/944
* @rylincoln made their first contribution in https://github.com/assafelovic/gpt-researcher/pull/948

**Full Changelog**: https://github.com/assafelovic/gpt-researcher/compare/v3.1.1...v3.1.2