Release 1.4.2

• Use minified JS as main entry in package.json. #Patch release. (5da4707)
• Use latest node 8 for builds (080cfd2)
• Merge branch 'master' of github.com:ShabadOS/gurmukhi-utils (833ff86)
• Add more npm keywords (5033397)
• Use prepublishOnly instead of CI command to build (e3268ab)