GLM v1.6.2

Diff since v1.6.1

Closed issues:

• GLM.lm(X, y) fails when X is a SubArray (#213)
• Stackoverflow with views (#444)
• Serialising GLM models. (#465)
• Gamma shape and scale seemingly swapped - where am I going wrong? (#468)
• cholpred + @view results in MethodError (#470)

Merged pull requests:

• Improved support for views (#471) (@palday)