v0.4.0

ProbNumDiffEq v0.4.0

Diff since v0.3.2

Merged pull requests:

• Code coverage improvements (#81) (@nathanaelbosch)
• More efficient second-order ODEs (#82) (@nathanaelbosch)
• Better counting of nf; Test to be added later (#83) (@nathanaelbosch)
• Improve callback code structure (#84) (@nathanaelbosch)
• Create .gitattributes to fix GitHub Languages (#85) (@storopoli)
• feat: improve clarity of intro sentence in Readme (#86) (@corneliusroemer)
• Adjust the Octavian.jl part a bit to reduce the compilation times (#88) (@nathanaelbosch)
• Building on OrdinaryDiffEq to compute Jacobians (#89) (@nathanaelbosch)
• Relax the measurement-type in update (#90) (@nathanaelbosch)