Garner.cache loses namespace options when deleting a record as block yields nil

[dblock]

See #80.

In

garner/lib/garner/cache.rb

Line 16 in 1292b59

Garner.config.cache.delete(compound_key) unless result

:

result = Garner.config.cache.fetch(compound_key, options_hash) do
    yield
end
Garner.config.cache.delete(compound_key) unless result

The fetch here is by compound key with options, but the delete is without the options.

[dblock]

@fancyremarker Is this good? Merge?

[fancyremarker]

@dblock: Yup, LGTM.