Update version number for Registrator release

Merge pull request #198 from QuantEcon/absorbing-further-interior-code

Implementation for absorbing barriers in even further interior nodes

tweak docs/make.jl a bit

tweak notebook() call

bump version number in Project.toml

Update Project.toml

Update Project.toml

Update Project.toml

jmd update

Update Project.toml

Update Project.TOML version number to correspond to the one we'll be tagging.