Merge pull request #343 from samphippen/remove-any-number-of-times

Remove `any_number_of_times`.
Reword a couple of confusing changelog entries.

[ci skip]
Use new `allow_message` API.
Merge pull request #348 from rspec/allow_message_api

Use new `allow_message` API.
Update changelog to reflect 2.14.0 release.

[ci skip]
Master is 3.0.0.pre now.

[ci skip]
Pass the instance to any instance stubs.

Signed-off-by: Sam Phippen <samphippen@googlemail.com>