Handle more deprecation warnings

[ckormanyos]

Rework of #751 is needed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.2%. Comparing base (329ee7f) to head (f445caf).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop    #754   +/-   ##
=======================================
  Coverage     96.2%   96.2%           
=======================================
  Files          300     300           
  Lines        29466   29466           
=======================================
  Hits         28332   28332           
  Misses        1134    1134           

Files with missing lines	Coverage Δ
include/boost/multiprecision/cpp_bin_float.hpp	93.9% <ø> (ø)
include/boost/multiprecision/cpp_dec_float.hpp	99.8% <ø> (ø)
include/boost/multiprecision/cpp_int/limits.hpp	100.0% <ø> (ø)
include/boost/multiprecision/float128.hpp	84.1% <ø> (ø)
include/boost/multiprecision/gmp.hpp	93.0% <ø> (ø)

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[ckormanyos]

Fixed by c524a55