add error mapping for catalog::LoadError
add error mapping for manifest::Failures
add error mapping for download::Failures
add error mapping for loader::Failures
use ToString(catalog::LoadError)
use ToString(manifest::Failures)
use ToString(download::Failures)
use ToString(loader::Failures)
FIX: wrong return value
FIX: error message required non-present integer
add optional introspection to PolymorphicConstruction
PolymorphicConstruction documentation update
boiler plate for PolymorphicConstruction unit tests
TEST: first unit tests, more to come
FIX: global state handling in unit test boilerplate
check all constructor counters in CreateFirst
add more test cases
add initialize-counter to ThirdPolyCtorMock
add initialize-counters to appropriate places
FIX: delete only if pointer != NULL