Remove unused imports
Update docstring for stats.normalize
Use ndarray methods rather than module functions
Add tests for stats.normalize
Fix bug in stats.normalize when array dimensions are large
Move s parameter from kernel functions to GP
Add initial gaussian kernel test functions
More tests for gaussian kernel
Convert circular gaussian kernel function to periodic kernel
Add periodic kernel function tests
Remove unused imports
Rewrite GP to use cholesky decomposition
Better handling of s parameter in GP
Fix bug in computing GP
Make GP kernels more robust
Tests for GP, with different kernel types
Merge branch 'write-tests'

Conflicts:
	stats.py