Introducing mimclib 1.0.0 with MISC support

About

A major revision to mimclib is now available at https://github.com/StochasticNumerics/mimclib

Change include:

* Support for custom objects and arrays as quantities of interests.
* Support for Sparse Grids, Combination Technique and MISC (other methods will be coming soon).
* A new database engine (sqlite3) that is file-based. This is a much easier (but slightly slower) database engine that makes it easy to setup mimclib.
* New plots: Work vs. Error and Work vs. index-set statistics.
* Bug fixes.

Any comments and feedback are welcome.