Use TravisCI's container infrastructure

This makes the startup time for tests much faster.

This also fixes an issue where bundle install would fail because the
version on travis's legacy infrastructure is too old.

See: https://github.com/bundler/bundler/issues/3558

We're still looking for people to help, but a maintainer now exists

Touching record when restored.

Using guard clauses.

Simplify description in README

I had a hard time comprehending the old wording. I think this is easier to read.

Simplify test setup

* Rely on bundler/setup to setup the load paths

Fixed issue #258: uniqueness validator now works with custom active c…

Introduce #paranoia_destroy_attributes and #paranoia_restore_attributes extension points

Use update_columns rather than touch to update the record, for
generality

Unlike touch, update_columns does not create a transaction for
itself, so we need to add the record to the transaction, if present.
If there is not a current_transaction, the add is a no-op.

This all means that delete will not invoke a transaction or run the
after_commit callbacks unless called from within one, which is
consistent with the Rails docs and the behavior of
ActiveRecord::Base#delete.

Fix uniqueness validator for non-paranoid associations

real_destroy callback

Fix for #122, #121 and #175 on Rails 4 branch

Ruby 1.9's version of `Object.const_get` does not support namespaced constants, so this commit replaces it with `ActiveSupport`'s `#constantize` method.

The tests were failing running JRuby on 1.9 mode. CRuby was not failing because it is not tested against 1.9.

Fixes #114

Fix association class name for namespaced has one model lookups

Use association.klass.name instead of association.class_name to get the
namespaced class name and therefore prevent:

`Object.get_const(association_class_name)`

from raising "uninitialized constant ParanoidHasOne"
in the following situation:

module Something
  def self.table_name_prefix
    "something_"
  end

  class ParanoidHasOne < ActiveRecord::Base
    acts_as_paranoid
    has_one :paranoid_belongs_to, dependent: :destroy
  end

  class ParanoidBelongsTo < ActiveRecord::Base
    acts_as_paranoid
    belongs_to :paranoid_has_one
  end
end

hasOne = Namespaced::ParanoidHasOne.create
hasOne.destroy
hasOne.restore(:recursive => true) # previously would explode

add GoRails video to readme documentation

Fix typo

partial indexes advice