MCWF, rebased to Master branch.#7

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i2000s wants to merge 10 commits intoacroy:masterfrom

Commits on Aug 10, 2014

Initial commit for MCWF method + some fixes for QuState.
acroy
committed

Commits on Aug 13, 2014

Basic version of the mcsolve function and example. Need to double check if it actually works, and use parallel.
i2000s
committed
Make a better documentation and performance opt.
i2000s
committed

Commits on Aug 25, 2014

Make creationop work.
i2000s
committed

Commits on Dec 5, 2014