v0.4.1

NMF v0.4.1

Diff since v0.4.0

Closed issues:

• ETA for Julia 0.7-1.0 compatible release? (#27)
• add init and alg to NMF.Result (#30)
• New version tagging (#35)

Merged pull requests:

• Added the coordinate descent method from scikit-learn, supporting sparsity (#23) (@vilim)
• Updates for 1.0 (#24) (@ararslan)
• Comments for CoordinateDescent method (#33) (@VPetukhov)
• Set package version to 0.4.1 (#37) (@ararslan)