Fixes offences of the following cops:
* Layout/SpaceAroundEqualsInParameterDefault
* Layout/SpaceAroundOperators
* Layout/SpaceBeforeBlockBraces
* Layout/SpaceInsideBlockBraces
* add Pry::Testable, and friends.
This commit replaces lib/pry/test/helper.rb by using category modules.
There's now:
* Pry::Testable:
* Pry::Testable::Evalable
* Pry::Testable::Mockable
* Pry::Testable::Utility
* Pry::Testable::PryTester
'include Pry::Testable' includes all of the above.
For the pry test suite it worked out best to include 'Pry::Testable' at the top-level.
In plugins I've written though this hasn't been the case, and I only normally need:
Pry::Testable::Evalable. So it reduces pollution for the third-party cases, which this
code is intended for since it lives within lib/ of the project.
What do you think?
* breaking change: add set_testenv_variables and unset_testenv_variables
* breaking change: add Pry::Testable::Variables, and rename
constant_scope() to temporary_constants().
* breaking change: rename inject_var as insert_variable, and move its
definition to Pry::Testable::Variables.
* include Pry::Testable::Evalable & include Pry::Testable::Variables into
the top-level, but keep the other two modules spec-local.
* document third argument of insert_variable.
* update CHANGELOG.md
* note changelog entry is a breaking change
* update documentation
