v1.5.5

• Add more detailed documentation/comments.

v1.5.4

• Some minor wording updates.

v1.5.3

• Remove now-pointless re-raise.
• Pin concurrent-ruby to a reasonable version.

v1.5.2

• Further clarity in error messaging.
• Freeze the cache list after start.

v1.5.1

• Add back in alerting if you attempt to load a cache before the refresher has run.
• Improve documentation on error handling.

v1.5.0

• Support for multiple cache stores, like: Caddy[:foo][:baz] instead of just Caddy[:baz]
• Additional tests.
• Additional documentation for the new feature.

v1.0.1

• More tests.
• Stop caching nil values returned after refreshers timeout or throw an exception (fall back on the last cached value).
• Additional documentation.