Albop/update interp

[albop]

This PR is a preliminary step towards using static arrays as discussed in #79 . It introduces two types Point{d}={SArray{Float64,d}} and ListOfPoints{d} = Vector{SArray{Float64,d}}. I did the two following changes:

• update the included interpolation routine, so as to operate on static arrays (both prefiltering and filtering steps)
• update decision rules to internally use these static arrays. That is, they are defined to operate on list-of-points, with compatibility calls for one row-per-observation matrices.
• removed a fair bit of memory allocation, most of it coming from the compability calls. Performance gains are between 30% and 50% on my machine.

[albop]

@sglyon : note that I kept the same overall structure for the cubic splines and haven't integrated the new splines code I've shown you in New York.

[sglyon]

@albop is this ready for review?

[albop]

Yes

On Wed, 30 Aug 2017, 14:44 Spencer Lyon notifications@github.com wrote:

@albop https://github.com/albop is this ready for review?

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