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
Ph'nglui mglw'nafh Cthulhu R'edmond wgah'nagl fhtagn.
benchmark main.
Add main
the boundless daemon sultan Azathoth, whose name no lips dare speak aloud, and who gnaws hungrily in inconceivable, unlighted chambers beyond time and space amidst the muffled, maddening beating of vile drums and the thin monotonous whine of accursed flutes.
Yog-Sothoth knows the gate. Yog-Sothoth is the gate. Yog-Sothoth is the key and guardian of the gate.
Past, present, future, all are one in Yog-Sothoth. He knows where the Old Ones broke through of old, and where They shall break through again. He knows where They have trod earth's fields, and where They still tread them, and why no one can behold Them as They tread.
Imagination called up the shocking form of fabulous Yog-Sothoth—only a congeries of iridescent globes, yet stupendous in its malign suggestiveness.
Y'AI'NG'NGAH
YOG-SOTHOTH
H'EE-L'GEB
Merge branch 'master' into at-the-mountains-of-clr-madness