Fix import issue

#17

Fix security vulnerability

Fixes a security vulnerability around tokens with a string-valued 'exp', 'nbf', or 'iat', validated regardless of the string's value,

add check for []interface{} type when validating audience

This fixes an issue where []interface aud would fail on type conversion.

rename module to form3tech-oss

Merge pull request #4 from Waterdrips/waterdrips-rename-module

Rename module to form3tech-oss

fix high severty security vuln

fixes dgrijalva#428 and the snyk vulnerability on incorrect checks on "aud" claim