Derp

Fix tests

Test Ruby 2.6.0

Gemfile lock

Bump gemfile

Add Errno::ENETUNREACH to exception list in BasicNetworkResolver (mid…

…dleman#2195)

Fixes issue middleman#1621 for the master branch. It was fixed in pull request  middleman#1625 for the middleman:v3-stable branch.

Prep version

prep release

Rubocop autofixes

Fix middleman#2019