Partially based on diff sent by Kai-Uwe Eckhardt in private mail.
v1.2.0
-- A huge refactoring of the library happened - renaming,
deprecating and replacing existing functions by improved API's.
All deprecated functions, macros and symbols are only marked as such
so this version is still API and ABI compatible to v1.x.
-- Daniel Mendler was pushing for those changes and contributing a load of patches,
refactorings, code reviews and whatnotelse.
-- Christoph Zurnieden re-worked internals of the library, improved the performance,
did code reviews and wrote documentation.
-- Francois Perrad did some refactoring and took again care of linting the sources and
provided all fixes.
-- Jan Nijtmans, Karel Miko and Joachim Breitner contributed various patches.
-- Private symbols can now be hidden for the shared library builds, disabled by default.
-- All API's follow a single code style, are prefixed the same etc.
-- Unified, safer and improved API's
-- Less magic numbers - return values (where appropriate) and most flags are now enums,
this was implemented in a backwards compatible way where return values were int.
-- API's with return values are now by default marked as "warn on unsused result", this
can be disabled if required (which will most likely hide bugs), c.f. MP_WUR in tommath.h
-- Provide a whole set of setters&getters for different primitive types (long, uint32_t, etc.)
-- All those primitive setters are now optimized.
-- It's possible to automatically tune the cutoff values for Karatsuba&Toom-Cook
-- The custom allocators which were formerly known as XMALLOC(), XFREE() etc. are now available
as MP_MALLOC(), MP_REALLOC(), MP_CALLOC() and MP_FREE(). MP_REALLOC() and MP_FREE() now also
provide the allocated size to ease the usage of simple allocators without tracking.
-- Building is now also possible with MSVC 2015, 2017 and 2019 (use makefile.msvc)
-- Added mp_decr() and mp_incr()
-- Added mp_log_u32()
-- Improved prime-checking
-- Improved Toom-Cook multiplication
-- Removed the LTM book (`make docs` now builds the user manual)
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