v1.6.0

• Adapters - Support for Rails 6.1 and above (Adapters::ActiveRecord, Adapters::ActiveSupportCache, ActiveSupportCache::MonetaStore)
• Adapters::YAML - add theadsafe option
• Adapters::Sequel - fix deadlock issue with #increment on MySQL in newer Sequel versions (#244)
• Adapters::Sequel - fix issue with Postgres HStore on newer Postgres (#243)
• Adapters - fixed an issue many adapters had where #merge! errored if passed an empty hash (#246)
• Support changes - Drop support for 2.3 and 2.4, add support for 3.x

v1.5.2

• Proxy - handle returning config when the adapter does not use config
• Avoid calling supports?(:expires) when expiry isn't needed
• Adapters::Mongo - fix merge! behaviour when no values are inserted

v1.5.1

• Adapters::File - fix an implicit hash issue in Ruby 3 (#222)

v1.5.0

• Adapters - internally, most (all?) adapters now inherit from a base Adapter class
• Adapters - adapter configuration is now accessed via a config method on
  each adapter - see the code for examples. This shouldn't affect
  users unless they were directly modifying adapters' attributes.
• Redis - fix deprecation warnings for Redis 4.6+ multi/pipelined handling (#215)
• Mongo - slight improvement to error handling

v1.4.2

• Pool - fix busy-loop issue (#197)

v1.4.1

• Adapters::Mongo - deprecate :db option, document :database option (#194)
• Adapters::Mongo - add retries to increment operation

v1.4.0

• Adapters::Mongo - drop support for moped gem (#182)
• Adapters::Redis - use #exists? where available (#189)
• Some reorganisation of code into more separate files (#177)

v1.3.0

• Transformer - add :each_key support (#170)
• Server - add :each_key support, use non-blocking IO (#165)
• Builder - dup options before passing to adapter/proxy (#174)
• Adapter::Couch - add HTTP basic auth support
• Support MRI 2.7.0 (#172)
• Minimum required MRI version is now 2.3.0 (#172)