Unprepared operators for ForwardDiff

[gdalle]

Versions

• Bump DI to v0.5.14

Extensions

• ForwardDiff: Add direct implementations for unprepared operators that do not call preparation first (see StaticArrays woes #413).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.71%. Comparing base (9182912) to head (fb0090c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #414      +/-   ##
==========================================
+ Coverage   96.67%   96.71%   +0.03%     
==========================================
  Files         103      103              
  Lines        4906     4962      +56     
==========================================
+ Hits         4743     4799      +56     
  Misses        163      163              

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[ExpandingMan]

For posterity note that it should probably be considered a bug in ForwardDiff that these are needed, since most of the inefficiency in the prepared methods seems to be coming from type instability on the part of ForwardDiff, but considering that a fix for that is not likely to come very soon this is certainly nice to have.

[gdalle]

Apparently, ForwardDiff's StaticArrays extension just ignores the config object which I create during preparation, and whose preparation causes type instability. With these new unprepared functions we should hit the right shortcuts