Prepare new release

[devmotion]

There's quite a few changes since the latest release: https://github.com/JuliaMath/HypergeometricFunctions.jl/compare/v0.3.23...master Could we maybe release them?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.70%. Comparing base (3033c4b) to head (a559d38).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #82      +/-   ##
==========================================
- Coverage   87.35%   84.70%   -2.66%     
==========================================
  Files           7        7              
  Lines        1471     1471              
==========================================
- Hits         1285     1246      -39     
- Misses        186      225      +39     

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