Rebase of #412

This removes the assumption from `really_destroy!` that there is
only one column value, the deletion date, that needs to be updated
on a model that is being `really_destroy!`ed. Instead, use the
defined `paranoia_destroy_attributes` as they are used in `destroy`
and other calls.

This prevents an issue where the DBMS will complain when trying to
`really_destroy!` one of these models, given that paranoia is
attempting to insert a DateTime value into a boolean (or otherly-
typed) column.

Fixes #326

Update .travis.yml

Removed the pessimistic dependency requirements.
Updated Ruby versions.
Test paranoia with Rails 5.1

⚠ instance variable @_disable_counter_cache not initialized

This `defined?(super)` check was introduced for Rails 4.1 support
https://github.com/rubysherpas/paranoia/pull/390#issuecomment-284819747
but we've stopped supporting Rails 4.1 already
https://github.com/rubysherpas/paranoia/pull/393#issuecomment-289227091

Version 2.3.1

bump active record max version

Version 2.3.0

Test with rails 5.1 and ruby 2.4.0

Changelog: Add missing bang in `#really_destroy!`

add version 1.4 of the Contributor Covenant

Fix counter cache with double destroy, really_destroy, and restore

Added association not soft destroyed validator

Fix UniquenessParanoiaValidator on rails 5.1.0.beta1

Add recovery window feature

add changes for 2.2.1 and bump version

Fixes a problem of ambiguous table names when using only_deleted meth…

Fixes a problem of ambiguous table names when using only_deleted method and joining tables that have a scope on `with_deleted`

Update homepage in gemspec

The homepage is supposed to be where you can find the code. It is displayed on rubygems.org page. Currently it will redirect you back to the same page. Should point at this github repo.

Update README to use proper version for Rails 5

Version 2.2.0

Ignore failures from all jruby's on travis

Add explicit language about dependent: :destroy

Update CHANGELOG.md

update ruby and rails versions

Use ActiveSupport.on_load to correctly re-open ActiveRecord::Base. https://github.com/rubysherpas/paranoia/issues/335

Touch record on paranoia-destroy. Fixes #296

Touch record on destroy by leveraging the paranoia_destroy_attributes.
Applied the same to the restore-method as this eliminates the extra query.

Touch record on paranoia-destroy. Fixes #296