V1.1 -- Major bug fix and better documentation

Major Updates

• order_cpp was using an O(N^2) sort routine that was supposed to be ditched before package release. It is now deprecated.
• order_stl replaces order_cpp, using the STL sort function to run the required sorting routine.

Minor Updates

• All test stat calculations were using 3 more length N vectors than necessary. This has been fixed.
• A paper demonstrating package components was posted to arXiv, and linked to throughout the documentation.
• The folder R/Extras was updated to use the code for the simulations in the arXiv paper.
• permutation_test_builder is now sampling with replacement.