logger.py: Add funcName to debug log formatting
package.py: Rename CURRENT to OK
package.py: Add debug logging for aur versions
status.py: Fix support for PackageStatus pkg type

packages() returns a PackageStatus on error. This was causing AttributeError
exceptions to be raised.
util.py: Remove str() from logr commands
util.py: Improve logr support for expac funcs
Add more tests for util.py