Added tag v18.7 for changeset 5a3fb1f81041
Created release v18.7
Add maximal iterations option for relevance vector machine trainer
Improved speed of reshape_to_column_vector()
Made frobmetric_training_sample serializable.
Fixed a bug pointed out by Daniel Girardeau-Montaut.  The covariance() function
didn't work on non-double valued matrices.
Fixed a bug in the backtracking_line_search() function pointed out by
Ping-Chang Shih.  The function ignored the max_iter parameter.
A minor change to avoid a compiler error from clang 3.4 on Mac OS X 10.9.
Thanks to Martin Fergie for reporting this problem.
Changed oca code so the prior vector can be the same object as the w vector.
fixed a typo in the spec
merged
Simplified example program.
Made the loss calculation more explicit.
merged
Made the point transformation objects default constructable and also
serializable.
merged
clarified spec
merged
merged
Added split_on_first() and split_on_last().