Update to ce6dd6b which has the following benign changes compared to 1.3.3 proper
* `std::`-ify a bunch of C library stuff
* C-cast -> `static_cast` or `reinterpret_cast`
* build system changes
* `unsigned` -> `uint32_t`
* removing UB in some shifts
* better support for powerPC and Windows
* Change out `cos(double)` for `cosf(float)` in C
* Correct `%d` to `%u` in printf