Release 2.0, 2023

There's more work to do on #1 but this contains the essentials: CMake generated, built, installed.

What's Changed

• Use CMake as a build system by @johnkerl in #2
• Create cmake.yml for CI by @johnkerl in #3
• Remove YAMM buildfiles by @johnkerl in #4
• Remove some foo-files by @johnkerl in #5
• Run clang-format by @johnkerl in #6
• Use C++ 20 by @johnkerl in #7
• Make more use of C++ reference-args by @johnkerl in #8
• Use bool in place of int by @johnkerl in #9
• Explicitly specify int32/int64 (first installment) by @johnkerl in #10
• Remove intfc.h, removing bool-argument antipattern by @johnkerl in #11
• Neatens in src/bitrand by @johnkerl in #12
• Remove #define SEOF -1 by @johnkerl in #13
• Coalesce nearly identical cmdlineedmatops.h into cmdlinematops.h by @johnkerl in #14
• Add more underscores to names of things by @johnkerl in #15
• Use C++ namespacing by @johnkerl in #16
• Re-run clang-format by @johnkerl in #17
• More renames by @johnkerl in #18
• File renames in regression-test data by @johnkerl in #19
• More int-to-bool modernization by @johnkerl in #20
• Move regression directory out of pre-cmake port-grist folder by @johnkerl in #21
• More int->bool: operators by @johnkerl in #22
• More int-to-bool: from_string methods by @johnkerl in #23
• More int-to-bool by @johnkerl in #24
• Jettison #ifdef F2POLY_SMALL by @johnkerl in #25
• Rename get_char -> get_characteristic by @johnkerl in #26
• More ctest coverage by @johnkerl in #27
• Accept USE_BIT_MATRIX by @johnkerl in #28
• More ctest for src/bits by @johnkerl in #29
• Use 64-bit parts for f2_poly_t by @johnkerl in #30
• Replace rsstring_t with std::stringstream by @johnkerl in #31
• Let regression/regress.sh be invoked from repo root by @johnkerl in #32
• Custom clang formatting rules by @johnkerl in #33
• Use std::vector in f2_poly_t impl by @johnkerl in #34
• Misc. renames by @johnkerl in #35
• More use of std::string by @johnkerl in #36
• Replace std::cerr and exit(1) with throw spffl::exception_t by @johnkerl in #37
• Set up initial CMake install by @johnkerl in #38
• Rework include directories by @johnkerl in #39
• More renames by @johnkerl in #40
• More renames by @johnkerl in #41
• Install headers to /usr/local/include/spffl rather than /usr/local/spffl/include by @johnkerl in #43

Full Changelog: 1.0...2.0