v0.2.1

Changelog

• 410a0e5 Merge pull request #4 from faabiosr/chore/error-handling
• 93a551f Merge pull request #5 from faabiosr/chore/use-error-handler
• 50c1b7d chore(errors): enable custom error handling
• e7d9b63 chore(errors): exclusive package for error related
• 1abb990 chore(errors): http errors
• a94ba13 chore(errors): wraps an error with a public message
• 4c6c4d3 chore(middleware): custom error handling
• ec29ec4 fix: datastore public error