Provide assertions accessor for minitest.

Bumps cucumber version to allow integration tests against minitest 5.
Merge pull request #1462 from rspec/issue-1354

Provide assertions accessor for minitest.
configure load time with formatters / reporter
base formatter describes capturing load time
reporting load time in base_text_formatter
Update start & summary notification with load time and use notifications to report load time
capture start time as early as possible
specify behaviour of no loadtime
enforce usage of load time in notifications
alternate implementation providing load_time to legacy formatters
changelog for #1427
Merge pull request #1427 from rspec/report_load_time

Report load time to formatters
Add :parent_example_group to RESERVED_KEYS.

It's managed by us so users shouldn't pass that metadata.
Merge pull request #1468 from rspec/update-reserved-keys

Add :parent_example_group to RESERVED_KEYS.
[fix rspec/rspec-core#1433] Added option to disable all monkey patching

- Added option to disable all monkey patching
- Fixed syntax to support ruby-1.8.7
- Refactored disable_monkey_patching!. Added docs, feature.
- Moved monkey patching specs to proper place
- Fixed zero monkey patching feature to support ruby-1.8.7
- Re-written specs to be more BDD-ish.
- Re-written docs for disable_monkey_patching!
- Made non-configured frameworks specs easier
- Fixed cuke to be lighter
- Fixed specs to support 1.8.7
- Improved rspec_<lib>_loaded? a bit;
- Improved not configured frameworks specs.
- Fixed typo in comments-docs.
- Fixed docs; rewritten feature.
- Re-written to use `in_sub_process`.
- Added missing yield to
  emulate_not_configured_expectation_framework
Merge pull request #1465 from waterlink/issue-1433-disable-all-monkey-patching-option

Added option to disable all monkey patching
Add changelog for #1465.

[ci skip]
Run against all examples (including `describe` one).
Standardize capitalization of scenarios.

When viewing in Relish, scenarios read as section titles. General
punctuation dictates that section titles should start capitalized.
Use a more explicit scenario description.