Display argument values if they mismatch

[paweldudek]

Right now if we get arguments mismatch Mimus will print out

failed - Call with identifier x was recorded, but arguments didn't match

Which is a bit too cryptic, we could use Swifts CustomStringConvertible and String(describing: ) to display captured and expected values, this would be helpful when debugging failures.

Edit: OCMockito has an amazing reporting similar to what we want to achieve here:

Argument(s) are different!
Wanted: start:"Fixture App Center Identifier" withServices:<(
)>
Actual invocation has different arguments:
start:@"Fixture App Center Identifier" withServices:@[MSAnalytics, MSCrashes]

Mismatch in 2nd argument. Expected <(
)>, but was <(
    MSAnalytics,
    MSCrashes
)>

MyApp -[AppConfigurator configureAppWithConfiguration:] + 397

[paweldudek]

Thanks @Eluss for implementing this! Closed by #32