Initial version of logistic regression.
Initial version of logistic regression.
Merge branch 'work' of https://github.com/xasmx/rust-ml into work

Conflicts:
	examples/logreg.rs
Merge branch 'work' of https://github.com/xasmx/rust-ml into work

Conflicts:
	examples/logreg.rs
Merge branch 'work' of https://github.com/xasmx/rust-ml into work
Fix to compile with latest Rust.
Update dependencies.
Make rust-ml compile with latest rust.
Make rust-ml compile with latest rust.
Initial implementation of decision boundary graph.
Add 2d decision boundary for logreg example.
Do not explicitly store/calculate cost.
Cleanup.
More cleanup.
Add docs target.
Clean up public module hierarchy.
Upgrade to newer version of la.
Use m! macro in tests.
Update to newest rust-la.