Pykan

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.7...v0.2.8
update grid extension to avoid loss spikes

What's Changed
* Updated auto_symbolic to include a configurable threshold & simplicity weight by srigas in https://github.com/KindXiaoming/pykan/pull/415
* `unfix_symbolic_all` produced errors by srigas in https://github.com/KindXiaoming/pykan/pull/418
* Fixed device mismatch error of Symbolic_KANLayer by ironjr in https://github.com/KindXiaoming/pykan/pull/426

New Contributors
* srigas made their first contribution in https://github.com/KindXiaoming/pykan/pull/415
* ironjr made their first contribution in https://github.com/KindXiaoming/pykan/pull/426

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.6...v0.2.7

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.5...v0.2.6

Updated tutorials

What's Changed
* Fix the bugs bugs when the prune function is called in tutorials by shuaizengMU in https://github.com/KindXiaoming/pykan/pull/345
* add sum and mult symbol pngs to the installation by DaanVanHauwermeiren in https://github.com/KindXiaoming/pykan/pull/350
* make sure tutorials can run on cuda

New Contributors
* shuaizengMU made their first contribution in https://github.com/KindXiaoming/pykan/pull/345
* DaanVanHauwermeiren made their first contribution in https://github.com/KindXiaoming/pykan/pull/350

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.1...v0.2.5

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.3...v0.2.4
fix recover_save_act

**Full Changelog**: https://github.com/KindXiaoming/pykan/compare/v0.2.2...v0.2.3
fixed multkan plot