Add refresh access token method

New method added to get a new token from a refresh token

What's Changed

• Bump decode-uri-component from 0.2.0 to 0.2.2 by @dependabot in #29
• Bump json5 from 2.2.1 to 2.2.3 by @dependabot in #31
• Build browserified & minified version by @WietseWind in #26
• Bump word-wrap from 1.2.3 to 1.2.4 by @dependabot in #34
• Bump tough-cookie from 4.0.0 to 4.1.3 by @dependabot in #33
• Improvement: Add ability to refresh an access token by @TheBerg in #39

New Contributors

• @TheBerg made their first contribution in #39

Full Changelog: v1.2.1...v1.3.0