Flowmc

This PR provides a couple of enhancements:
1. LogPDF is now a resource, meaning in the more advance case, the users can specify multiple logPDFs. This helps use cases such as discrete-continuous sampling as well as parallel tempering.
2. Add parallel tempering strategy
3. Strategies within the sampler is now promoted to be a dictionary instead of a list, making strategies to be reusable without recompilation

What's Changed
* Sync by kazewong in https://github.com/kazewong/flowMC/pull/203
* 204 making logpdf a resource by kazewong in https://github.com/kazewong/flowMC/pull/205
* 202 add parallel tempering strategy by kazewong in https://github.com/kazewong/flowMC/pull/208
* 206 make strategies reusable without recompiling by kazewong in https://github.com/kazewong/flowMC/pull/207


**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.4.0...flowMC-0.4.1

This is a major release of `flowMC`. The main changes includes the addition of a new intermediate API centers around the resource-strategy design, where users can customize the sampling algorithm to employ more complex algorithm. There are some breaking changes in the top level API but it should be relatively straightforward to migrate from the older flowMC version to this version.

What's Changed
* 170 lower precision training by kazewong in https://github.com/kazewong/flowMC/pull/171
* minor fix of the example using a non-jax likelihood by marylou-gabrie in https://github.com/kazewong/flowMC/pull/176
* New script to generate useful plots by Qazalbash in https://github.com/kazewong/flowMC/pull/179
* Update Sampler and NFModel classes by kazewong in https://github.com/kazewong/flowMC/pull/182
* Update optax requirement and remove testing print statement by thomasckng in https://github.com/kazewong/flowMC/pull/180
* 188 updating project infrastructures by kazewong in https://github.com/kazewong/flowMC/pull/189
* 190 updating documentation to align with the latest version of flowmc by kazewong in https://github.com/kazewong/flowMC/pull/196
* 193 improve coverage of flowmc by kazewong in https://github.com/kazewong/flowMC/pull/197
* 198 generalize buffer by kazewong in https://github.com/kazewong/flowMC/pull/199

New Contributors
* Qazalbash made their first contribution in https://github.com/kazewong/flowMC/pull/179
* thomasckng made their first contribution in https://github.com/kazewong/flowMC/pull/180

**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.3.4...flowMC-0.4.0

What's Changed
* update example and add print summary to Sampler by ThibeauWouters in https://github.com/kazewong/flowMC/pull/169
* The previous load model function does not correctly load the model by kazewong in https://github.com/kazewong/flowMC/pull/172


**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.3.3...flowMC-0.3.4

What's Changed
* 165 add probability floor to normalizing flow model -> updating Adam optimizer to optimize with constraint by kazewong in https://github.com/kazewong/flowMC/pull/168


**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.3.2...flowMC-0.3.3

Optimization strategy is included in this version.

Also fixed a bug in the flow model that prevent training

What's Changed
* 163 implement optimization strategy by kazewong in https://github.com/kazewong/flowMC/pull/164


**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.3.1...flowMC-0.3.2

Fixing training bugs and sampling bugs. Previous version incorrectly also start at initial position instead of actually stepping during sampling. This is fixed and tested with community example now.

**Full Changelog**: https://github.com/kazewong/flowMC/compare/flowMC-0.3.0...flowMC-0.3.1