v0.4.2

• Adds ex_aws as an optional dependency.
• Adds mix.lock to compile on older versions of Elixir

v0.4.1

• Add ex_aws exception handling for DataAlreadyAcceptedException and InvalidSequenceTokenException

v0.4.0

• Removes dependency on Poison
• aws-elixir versions 0.5.0, 0.6.0, 0.7.0 are supported
• Wide range of HTTPoison versions are now accepted (>= 0.11.1)
• Fixes warnings for Elixir 1.11
• Handles {:error, {"ThrottlingException", "Rate exceeded"}}, previously crashed