Revert IRB checking changes in console command #155 #216

This version of console works for standard installations of rails
console and Pry, without trying to cover wonky reassignment of the IRB
constant. If you insist on reassigning IRB to Pry, you'll have to
write your own zeus console command in a custom_plan file (see the
examples directory).
Add changelog notes and prepare for release
Change top version naming in changelog

Don't assume that the next version will be 0.16
Make sure dev_bootstrap works out of the box