1.1.10 also breaks configuration

[wr0ngway]

If i have a third party outputter (log4r-gelf), it used to be that the initializer for that class was called with a hash containing symbols as keys. It now calls the initializer with strings for keys. Breaking changes like this should at least bump the minor version number.

related to https://github.com/wr0ngway/log4r-gelf/issues/3