This allows it to be easily re-used in other libraries to do
meta-testing on their own godog features/steps.
At some point it may make sense to migrate this entirely to a
sub-package of godog, however that would require a larger
re-architecting of the project structure to avoid circular dependencies
(e.g. `import cycle not allowed`).
Updated lang.feature with the additional cucumber.feature
Updated load.feature with the additional cucumber.feature
Updated events.feature to account for ripple effect of updating lang and load
Updated run.go to indicate that cucumber formatter does not support concurrent.
Updated suite_test.go to handle one new testing step.
* bdde4c4 fix test suite and migration changes
* a3b6e01 refactor pretty formatter
* 2c0c7ba fix outline scenario handling
* f6b411d add a different language test feature
add a different language test feature
* 042235c expose StepDef which is needed to formatters
* e9474dc fix outline scenario formatting
* f02c6ce fix comment position calculation for outlines
* 5d7f128 remove step status type, use standard error
