Preconditioner

[pnkraemer]

These are the changes that we discussed in person 2 weeks ago @nathanaelbosch. In summary:

• default preconditioner is [h^(-q), h^(-q+1), ..., 1] instead of [1, h, ..., h^q]
• a test is added that makes sure that step h=1e-5 and order q=3 work with a smoother (this was not possible before!)
• the documentation in prior.py is updated. The doctest that needed fixing 2 weeks ago magically works now...

[codecov]

Codecov Report

Merging #166 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #166   +/-   ##
=======================================
  Coverage   73.32%   73.32%           
=======================================
  Files          57       57           
  Lines        3040     3040           
  Branches      391      391           
=======================================
  Hits         2229     2229           
  Misses        660      660           
  Partials      151      151           

Impacted Files	Coverage Δ
src/probnum/diffeq/odefiltsmooth/prior.py	95.04% <100.00%> (ø)

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[nathanaelbosch]

Looks good to me!

But the pylint check currently fails, even though locally it seems fine. Do you have any idea on why this is happening?

[pnkraemer]

The lint fails in prob. Maybe something to do with pytest-dev/pytest-qt#170? I dont know enough about tox about this. THe same problem came up in #167 but since prob is bound for refactoring anyway, maybe we merge anyway?

[JonathanWenger]

After Nathanael's fix #171 linting works now.