v1.1.0

• Added an Errors(error) []error function to extract the underlying list of
  errors for a multierr error.

v1.0.0

No changes since v0.2.0. This release is committing to making no breaking
changes to the current API in the 1.X series.

v0.2.0

• Repeatedly appending to the same error is now faster due to fewer
  allocations.

v0.1.0

• Initial release