dasmig-core 1.3.0

Trigonometry in core::math (sin_cos_deg, sin_deg, cos_deg, atan, atan2_deg, asin_deg, acos_deg) and the gamma, beta and weibull distributions, all bit-identical on every platform and checked against scripts/reference.py. Fixes the clang-tidy warnings in table.hpp and tsv.hpp. No output changes: every library can take this core without changing its known answers.