* Fix compilation with -Wsign-conversion
For tests with GCC and Clang
Fixes https://github.com/ETLCPP/etl/issues/632
* Fix support of negative Id in type_lookup.h: type_from_id
* Fix element access arithmetic in atomic_gcc_sync.h fetch_add/fetch_sub
* Fix rounded_integral_division.h: divide_round_half_odd(): direction is always 1
* Fix bitset_new test: bitset is implemented as little endian container
* Fix test_bsd_checksum.cpp: endian test was only implemented for little endian
* Fix endianness test
* Fix endian in crc tests
* Fix test_fnv_1
* Fix test_hash
* Fix test_jenkins
* Fix test_memory
* Fix pearson test
* Fix test_xor_rotate_checksum
* Fix murmur test
* Making crc constexpr for c++14. Allows compile time CRC computation.
* Fix syntax when using c++03 or `ETL_FORCE_NO_ADVANCED_CPP`
* Remove use of `ETL_FORCE_NO_ADVANCED_CPP` option since it is no longer used.
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Co-authored-by: Zach O'Brien <zach.obrien@tortugaagtech.com>
Co-authored-by: John Wellbelove <jwellbelove@users.noreply.github.com>
