• #54: Use t.Setenv
  t.Setenv is now being used. This change contributes to the enhancement of the testing environment.
• #55: Use fmt.Errorf
  pkg/errors has been replaced with fmt.Errorf. This change simplifies error handling in the code.
• Bump github.com/BurntSushi/toml from 0.4.1 to 1.3.0 #53
• Bump github.com/google/go-cmp from 0.5.6 to 0.5.9 #50

Fix loading empty files the second time in the same loader instance. #34

• Remove tfstate package. #30
  Use github.com/fujiwara/tfstate-lookup/tfstate.FuncMap directly.
• Add Loader.Data element to inject any values into the configuration template files. #29

Add New() and Funcs() func. #11 (@mashiike)

Add config.Delims() function.