Update gitignore.
Merge branch 'master' of bitbucket.org:oxclg/oxnlm
Add missing library dependency.
Add missing library dependency.
Time tracking.
Track time to compute gradient.
NCE time tracking.
Parallelize gradient updates (-maxent models).
Reset minibatch gradients instead of allocating new ones.
Retire unconstrained stores.
Fix broken unit tests.
Make adagrad and regularizer updates on a single thread for maxent models.
Final speed improvements.