Fix solve_exp_ode not updating position

[r0uv3n]

Fixes #744 and fixes #740. Also add some new tests that fail without the fix for #744.

[kellertuer]

Nice!

The one small hint failing is an entry in the changeling (NEWS.md), if you could add that as well, this looks perfect!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.69%. Comparing base (11f0a6c) to head (f58a168).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #748   +/-   ##
=======================================
  Coverage   99.69%   99.69%           
=======================================
  Files         123      123           
  Lines       11415    11415           
=======================================
  Hits        11380    11380           
  Misses         35       35           

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[r0uv3n]

Should I just add a new minor version number for this?

[kellertuer]

yes, as date you could put “unreleased” we will add the date when we register the new version; for the rest just follow the scheme that is already there :)

[kellertuer]

Looks good to me. Thanks for your contribution!

[mateuszbaran]

Thanks, this looks right to me.