* add localizer interfaces
* add 1.18 to the supported versions
* use go 1.17 for lint for now
* use localizer interfaces in the library
* fix incorrect naming of the HTTPResponseLocalizer interface
* fix coverage collection
* new error collector & improvements for errors
* update golangci-lint, microoptimizations, linter fixes
* UseTLS10 method
* remove dead code
* add 1.17 to the test matrix
* fix for docstring
* split the core package symbols into the subpackages (if feasible)