nntrf 0.1.0:

• Initial release to CRAN ## nntrf 0.1.1:
• Small mistakes corrected and added a vignette for doing hyper-parameter tuning with nntrf and mlr ## nntrf 0.1.2
• Mistake corrected in hyper-parameter tuning vignette. Added Xavier and orthogonal weight initialization. ## nntrf 0.1.3
• Removed Xavier and orthogonal initialization methods (they do not seem to improve results and make code more complex). Regression problems are now allowed, and a new vignette has been added for regression.