5.2.0

• The required() function now verifies the variable is not an empty string

5.1.0

• Ability to add custom accessors in PR #72 (thanks @todofixthis)
• Improved TypeScript tests
• Fixed warning generated by husky

5.0.0

• Return values from asArray() are now more intuitive & consitent
• asUrlString() and asUrlObjectnow use the built-in URL class in Node.js
  to perform validation
• README updated in accordance with changes listed above

4.1.0

• Add asPortNumber() function
• Update documentation structure

4.0.1

• Add node process.env typings to env.from

4.0.0

• Rename .env.mock() to env.from()
• Change module internals per issue #39
• Update docs related to env.mock

3.5.0

• Update required() to support boolean parameter to bypass the check

3.4.2

• Fix README badge copy/paste error

3.4.1

• Fix TypeScript definition for "asBoolStrict" function name

3.4.0

• Add convertFromBase64() function
• Enable Greenkeeper