v0.2.1

What's new:

• Update format of Error method's return string value:
  now Error method returns nested error text as 1 (2 (3)) instead of 1; 2; 3.
• Update Error method test.

Full Changelog: v0.1.0...v0.2.1

v0.2.0

I am glad to present you a package for errors chaining. What is currently available in the package:

• errors chaining;
• checking with errors.Is;
• checking with errors.As;