Destroy MarkerEvaluation for being pointless, fix two silly mistakes in tests and update packaging changes.

Fix multiline strings with missing spaces

is already cleaned up by py.test.

Now that bootstrap script automatically installs the latest published version, it's no longer necessary to track the _current_ bootstrap version with a bookmark.

Use RawConfigParser instead of SafeConfigParser in PyPIConfig class. Interpolated values are no longer supported. Since backward compatibility could not be retained in either case, prefer the simpler, more direct format. Ref #442.