libpressio version 0.53.0

libpressio version 0.53.0

Major Changes

• POSSIBLE BREAKING CHANGE pressio_option can now hold
  {u,}int{8,16,32,64}_t values and the return type of the pressio
  option functions which returned an int now accept/return an int32_t.
  This enables LibPressio to support more complex configurations types
  without resorting to a user_data type or using a pressio_data object
  where it isn't needed. Additionally, pressio_option_int32_type no
  longer convert implicitly to double. This is because the previous
  behavior was ambiguous depending on which compiler you used, and it
  was contrary to the intended spirit of the functionality. implict
  conversions were intended to never reduce precision the old
  functionality could do that. The new definitions for the conversions
  are based on the C++ standards definition of what a narrowing
  conversion is. This means that one conversion which is safe on most
  architectures and compilers (int32_t -> double) is not allowed at time
  of writing since the standard considers all integral to floating_point
  conversions to be narrowing. Some test cases were updated to match
  the new behavior. Serializaton and printer routines were updated to
  match. Corresponding stable C APIs were added.

Bug Fixes

• sz plugin now returns thread safety as a int32_t like every other
  compressor.
• explicitly made all returns of thread_safety int32_t rather than just
  int.
• removed unused arguments from the test code.
• LibPressio no longer adds -Werror by default to debug builds. This
  caused trigger undesired build failures on old/buggy compilers. To
  restore the old functionality, pass
  -DLIBPRESSIO_TREAT_WARNINGS_AS_ERRORS=ON to CMake