Merge pull request #1208 from mickem/fixed_check_service_issue

Fixed more compiler warnings

Fixed codereview

Fixed a few more compiler warnings

Added support for emojis

Fixed compiler warnings

Moved python script to std::shared_ptr

Fixed openssl link warning

Updated docs

Fixed compiler warning on windows

Fixed code review feedback and formatted code

Added test, refactored code and improved docs for check_service

Changed default details syntax to include exit_code

Changed state_is_ok and state_is_perfect to use triggers and exit_code

Added exit_code to check_service to filter/check exit status of services.