Separate initialization from solving in the integrator.
Clear the solution.
Fix.
Benchmark result.
After eggrobin's review.
Merge pull request #80 from pleroy/IntegratorInitialization

Separate integrator initialization from solving
Do it.
Merge branch 'master' into tiny-todo
Merge pull request #81 from eggrobin/tiny-todo

Tiny todo
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Merge branch 'master' into at-the-mountains-of-clr-madness
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