Full changelog:
- [ir] Remove "kernel" when printing ReturnStmt (#2353) (by xumingkuan)
- [misc] Support Python 3.9 (#2274) (by Derived Cat)
- [opt] Simplify modulo POT (Stage 1) (#2352) (by xumingkuan)
- [opt] Slightly simplify algebraic simplification (#2337) (by xumingkuan)
- [Refactor] Add a class Callable to unify Kernel and Function (#2338) (by xumingkuan)
- [ir] Rename KernelReturnStmt to ReturnStmt (#2349) (by xumingkuan)
- [lang] Support std::optional and enum classes in the serializer (#2350) (by Ye Kuang)
- [IR] Support DiffRange shl (#2346) (by Kenneth Lozes)
- [Docker] Fix the docker build by bumping CMake version in Dockerfile (#2348) (by Chengchen(Rex) Wang)
- [ir] [test] Add tests for make_block_local (#2343) (by Ye Kuang)
- [ir] Add ArithmeticInterpretor to evaluate a subset of CHI IR (#2342) (by Ye Kuang)
- [opt] Better encapsulate BLS bounds (#2341) (by Ye Kuang)
- [Example] cornell_box: Remove unused sphere (#2334) (by Aaryaman Vasishta)
- [opt] Simplify replace_statements and improve demote_dense_struct_fors (#2335) (by xumingkuan)
- [refactor] [test] Reorganize tests' file structure (#2336) (by xumingkuan)