Pull some compatible changes from the fabrication-3 branch to master

Closes #14 and #15

See merge request !11

Install rubocop-performance and address issues

See merge request !12

This reverts commit da7a3c2e.

Closes #19

Ensure the presence of `attributes=` doesn't break things

Closes #19

See merge request !13

Add rails 7 to appraisals

See merge request !14

Closes #18

Add support for specifying individual files in fabricator_paths

Closes #18

See merge request !15

This allows you to use transients like you would in the callbacks
and allows you to pass in explicit values when doing custom
initialization. E.g.

```ruby
Fabricator(:widget, class_name: "Widget") do
  transient :name
  initialize_with do |attrs|
    Widget.new(name: attrs[:name] || "DEFAULT_NAME")
  end
end

Fabricate(:widget).name #=> "DEFAULT_NAME"
Fabricate(:widget, name: "CUSTOM_NAME") #=> "CUSTOM_NAME"

Fabricator(:widget, class_name: "Widget") do
  transient :name
  on_init { |attrs| init_with(attrs[:name] || "DEFAULT_NAME") }
end

Fabricate(:widget).name #=> "DEFAULT_NAME"
Fabricate(:widget, name: "CUSTOM_NAME") #=> "CUSTOM_NAME"
```

This is especially helpful when you e.g. have two ActiveRecords
that validate two of their associations "match". In this case you'd
fabricate the first association normally. Then you'd fabricate
the second association passing in the input that must match the
first association using a transient.

pass any transients when calling `initialize_with` or `on_init` blocks

See merge request !16

Replace cucumber step object registration with generic notifiers

See merge request !17

Closes #21

Add metadata section specifying accurate project links

Closes #21

See merge request !18

Bundle update

See merge request !19

Closes #26

Ignore LoadError when invoking the rails generator

Closes #26

See merge request !20

Bundle update test environment

See merge request !21

Apparently we weren't using it at all

Remove ffaker

Closes #32

See merge request !22

Rubocop thread safety

See merge request !23

This makes them easier to address than broadly disabling

Refactor and expand on Fabrication::Support.class_for

See merge request !24

Replace _klass with resolved_class

See merge request !25

Drop ruby 2 6

Closes #36

See merge request !26

And include fabrication gem name in every message

Use logger to print deprecation warnings

Closes #35

See merge request !27

Use a memoized getter for transients in base generator

Closes #31

See merge request !28

- before_validation => before_create
- after_validation => before_create
- before_save => before_create
- after_save => after_create

Closes #33

This has been replaced by initialize_with

Closes #29

Alert the user to usage of deprecated callbacks

Closes #29 and #33

See merge request !29

Bundle update

See merge request !30

Refactor Generator::Sequel to reduce AbcSize

See merge request !31

Refactor Support#variable_name_to_class_name to fix Style/MultilineBlockChain rubocop error

See merge request !32