Adding caller context to the after and before handler

[tesonep]

Adding support to extract the CallerContext after and before in the handler.

[coveralls]

Pull Request Test Coverage Report for Build 3159478883

• 14 of 14 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.9%) to 81.69%

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Totals
Change from base Build 1529975535:	0.9%
Covered Lines:	232
Relevant Lines:	284

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💛 - Coveralls

[guillep]

a couple went ok, others still have some flakyness