v1.5.0

• Move package utils from internal to pkg
• Swap all string length comparison with empty string check
• Add BindKey & ReflectOptions to public API
• Add tests for func type
• Update README/SPEC markdown
• Add an error to Get method
• Create an example to know how to get logs from Injector
  • This example needs to use unexported packages yet, so it will need update after the release
• Update bind.Instance to not use remy.Binder functions
• Change RegisterSingleton function signature