Robert Audi questions

• Rails + Postgres: Multi-tenancy done right?
• RSpec: Why doesn't let work but before(:each) does?
• Changelog file: YAML vs JSON vs CSV [closed]
• What should MiniTest::Spec files be named?
• Creating a "two way" configuration file
• What (kind of) project could I create to learn JavaScript?
• Rails + CarrierWave: NoMethodError: undefined method `name' for nil:NilClass
• Rails: How to test subdomains with RSpec
• How to rescue custom exceptions coming from a middleware in Rails 3.2?
• Completion handlers and return values

Robert Audi answers