v0.8.0

New Features

• cyclic p-splines: you can now train models with periodic features by using the 'cp' basis like so:

GAM(s(0, basis='cp'))

• factor smooths now allow dummy coding, via:

GAM(f(0, coding='dummy'))

Models using this coding scheme are more statistically interpretable , and computationally less expensive than those using one-hot encodings.

Bug Fixes

• models can mix constrained terms and un-constrained tensor-terms
• tensor terms can be constrained