mlpack 3.0.1

Released May 10th, 2018.

• Fix intermittently failing tests (#1387).
• Add Big-Batch SGD (BBSGD) optimizer in src/mlpack/core/optimizers/bigbatch_sgd (#1131).
• Fix simple compiler warnings (#1380, #1373).
• Simplify NeighborSearch constructor and Train() overloads (#1378).
• Add warning for OpenMP setting differences (#1358/#1382). When mlpack is compiled with OpenMP but another application linking against mlpack is not (or vice versa), a compilation warning will now be issued.
• Restructured loss functions in src/mlpack/methods/ann/ (#1365).
• Add environments for reinforcement learning tests (#1368, #1370, #1329).
• Allow single outputs for multiple timestep inputs for recurrent neural networks (#1348).
• Neural networks: add He and LeCun normal initializations (#1342), add FReLU and SELU activation functions (#1346, #1341), add alpha-dropout (#1349).