2.1.0

• add interface naming convention rule for Nest JS by @vc-lbmadesia in #17
• remove mix-operator rule for Nest JS by @vc-lbmadesia in #17
• change max-length from 200 to 120 for Nest JS by @vc-lbmadesia in #17
• add es5 value in trailing comma for Nest JS by @vc-lbmadesia in #17