Silence warnings in MemoizedHelpers.
Silence warning in RSpecHelpers.
Silence warning in example group spec.
Remove code raising warning with raise_error.
Silence warnings from pretty printing example with hacks.
refactor warning supression of ruby library code
changelog entry
Merge pull request #818 from JonRowe/context_aware_shared_examples

Allow shared_examples to be defined per ExampleGroup.
Merge pull request #909 from JonRowe/silence_warnings

Get rid of warnings from rspec-core's library and spec code.
tighten up the deprecation warning
Change `warn_deprecation` to use configurable `deprecation_io`
update changelog
remove internal override of warn
deprecation io
configurable io object
integrate new deprecation io object with config
prevent file escape
rename message to summary
remove stubbing in tests as per @myronmarston's suggestions
change filename to description