v0.5.1: Merge pull request #61 from Element-126/interpolations-v0.9

Support Interpolations v0.9

v0.5.0: Merge pull request #56 from awllee/master

Fixes for Julia 0.7/1.0

v0.4.1: Merge pull request #49 from davidanthoff/fix-deprecation

Fix deprecation warning

v0.4.0

Fix deprecations (#48)

v0.3.2: lower Compat minimum version (#45)

* lower Compat minimum version

0.17 needed for new-style abstract type

* remove unneeded compat const

would be needed if parametric (in Compat 0.18), but it isn't here

* remove unneeded at-compat in bivariate.jl

ditto, should squash this

v0.3.1

Fix .minimum -> Optim.minimizer. (#40)