Undeprecate some stuff

[mvz]

Summary

Restores #all_output, #all_stdout, #all_stderr and #in_current_directory API methods to non-deprecated status. Also un-deprecates the current behavior of output-checking cucumber steps.

Motivation and Context

• These API methods seem to be the deprecated methods most used by downstream projects, and their replacements are more complex.
• The output-checking cucumber steps are currently set to have a breaking change in 1.0.0 and we should instead have a smooth upgrade path that will allow moving from latest 0.14.x to 1.0.0 when the latter is released.
• The replacement cucumber steps in master currently have less useful output, and the current behavior is more intuitive.

How Has This Been Tested?

Some tests were added but mostly code was just moved.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (cleanup of codebase without changing any existing functionality)
• Update documentation

Checklist:

• I've added (some) tests for my code
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[mvz]

See #605.

[luke-hill]

I think a couple of my changes are easy to make, and a couple I could be wrong with.

All in all this is tricky to review, so I've not spent too long on it. The problem with some of these cukes is getting almost untenable and we definitely should refactor some of them for 1.0 / 0.14.x

Also is this branch being merged into master in some guise so these commands will still exist in 1.0?

[mvz]

Also is this branch being merged into master in some guise so these commands will still exist in 1.0?

Yes, I will make another pull request to re-introduce these in master.

[mvz]

@luke-hill I updated the scenario wording and will defer further clean-up of the cucumber steps to later.