Convert specs to RSpec 2.99.2 syntax with Transpec

This conversion is done by Transpec 2.3.7 with the following command:
    transpec

* 447 conversions
    from: it { should ... }
      to: it { is_expected.to ... }

* 158 conversions
    from: == expected
      to: eq(expected)

* 99 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 69 conversions
    from: obj.should
      to: expect(obj).to

* 54 conversions
    from: it { should_not ... }
      to: it { is_expected.not_to ... }

* 51 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 33 conversions
    from: obj.should_not
      to: expect(obj).not_to

* 32 conversions
    from: describe 'some model' { }
      to: describe 'some model', :type => :model { }

* 23 conversions
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

* 15 conversions
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)

* 7 conversions
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)

* 5 conversions
    from: collection.should have(n).items
      to: expect(collection.size).to eq(n)

* 4 conversions
    from: Klass.any_instance.unstub(:message)
      to: allow_any_instance_of(Klass).to receive(:message).and_call_original

* 2 conversions
    from: describe 'some feature' { }
      to: describe 'some feature', :type => :feature { }

* 2 conversions
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

* 2 conversions
    from: obj.unstub(:message)
      to: allow(obj).to receive(:message).and_call_original

* 1 conversion
    from: Klass.any_instance.should_not_receive(:message)
      to: expect_any_instance_of(Klass).not_to receive(:message)

For more details: https://github.com/yujinakayama/transpec#supported-conversions