Release v4.2

Version 4.2

• New home! And online single headers for https://godbolt.org
  • Library: https://github.com/stclib/STC
  • Headers, e.g. https://raw.githubusercontent.com/stclib/stcsingle/main/stc/cvec.h
• Much improved documentation
• Added Coroutines + documentation
• Added new crand.h API & header. Old crandom.h is deprecated.
• Added c_const_cast() typesafe macro.
• Removed RAII macros usage from examples
• Renamed c_foreach_r => c_foreach_rv
• Renamed c_flt_count(i) => c_flt_counter(i)
• Renamed c_flt_last(i) => c_flt_getcount(i)
• Renamed c_ARRAYLEN() => c_arraylen()
• Removed deprecated c_ARGSV(). Use c_SV()
• Removed c_PAIR