1. Add `zeros_like`,`poss_like`,`negs_like` and `full_like` function
2. Fixed some bugs in the `random.choice` method.
3. Change the fuzzy number method name:`mohunum`->`fuzznum`
4. Added fuzzy set method `fuzzset`, used to create a fuzzy set
5. Change the fuzzy number base class name: `fuzzNum` -> `mohunum`
6. Dynamic inheritance is deprecated
7. Added constant setting `constant`
> Note: The base class of fuzzy sets is `mohuset`, the fuzzy set creation method is `fuzzset()`, the fuzzy number base class is `mohunum`, and the fuzzy number creation method is `fuzznum()`
**Full Changelog**: https://github.com/yibocat/MohuPy/compare/v0.1.6-beta...v0.1.7-beta