* [build] fix: ignore logging when running singular tests
Ensures that logging is ignored at runtime when running
individual tests using `nim c -r tests/...`
* [build] Allow tests to be run with -d:chronicles_log_level
When running tests with chronicles_log_level set, do not
hide the the logs.
* [build] disable XCannotRaiseY hint
There are too many {.raises:[Defect].} in the
libraries that we use, drowning out all other
warnings and hints
* [build] disable BareExcept warning
Not yet enabled in a released version of Nim,
so libraries that we depend on have not fixed
this yet, drowning out our own hints and warnings
* [build] disable DotLikeOps warning
dot-like ops were an experiment that is not going
land in Nim
* [build] compile log statements in tests
When running tests, all log statements are compiled.
They are filtered out at runtime during a test run.
* [build] do not build executable when running unit test
It's already built in the integration test
* [build] Fix warnings
- remove unused code
- remove unused imports
- stop using deprecated stuff
* [build] Put compiler flags behind nim version checks
* [CI] remove Nim 1.2 compatibility
markspanbroek