Fix issue #174 - building with boost 1.65+

[konserw]

Summary

Fix building with boost 1.65+

Details

Boost commit boostorg/test@fcb302b#diff-bcc3185dd80b117f8fc46af27d0eba1b added additional parameter to 2 functions in log_formatter, which left our log_interceptor with 2 pure virtual functions.

Motivation and Context

Fix for issue #174 - building with boost 1.65+

How Has This Been Tested?

I've built cucumber and run unit tests on my linux machine with boost 1.65.1 (which failed before this change)

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).

Checklist:

• It is my own work, its copyright is implicitly assigned to the project and no substantial part of it has been copied from other sources (including Stack Overflow). In rare occasions this is acceptable, like in CMake modules where the original copyright information should be kept.
• I'm using the same code standards as the existing code (indentation, spacing, variable naming, ...).
• I've added tests for my code.
• I have verified whether my change requires changes to the documentation
• My change either requires no documentation change or I've updated the documentation accordingly.
• My branch has been rebased to master, keeping only relevant commits.

[coveralls]

Changes Unknown when pulling d9b2207 on konserw:boost165 into ** on cucumber:master**.

[konserw]

@muggenhor @paoloambrosio - care to review?

[muggenhor]

Looks good, thanks for taking the time to fix!

[fxcoudert]

Hi, could a new version possibly be released, including this change? Right now, shipping cucumber-cpp as part of Homebrew requires using an old boost, which we would like to get rid of. A released version that builds with latest Boost would be great. Thanks!