Rename package from static-sum-type to stags

Status Job ID Name Coverage
  Test
failed #139744354
test

00:01:00

failed #139743673
test

00:01:08

 
Name Stage Failure
failed
test Test
FATAL: file does not exist                         
Failed to extract cache
$ npm install
npm ERR! code EINTEGRITY
npm ERR! sha512-7XOMnz8Ynx1gGo/3hyV9loYNPWM94jG3+3T3Y8tsfstagsFmETmENCMU/A/zj8Lyaj1lkgEepKepvd6240tBRvlw== integrity checksum failed when using sha512: wanted sha512-7XOMnz8Ynx1gGo/3hyV9loYNPWM94jG3+3T3Y8tsfstagsFmETmENCMU/A/zj8Lyaj1lkgEepKepvd6240tBRvlw== but got sha512-7XOMnz8Ynx1gGo/3hyV9loYNPWM94jG3+3T3Y8tsfSstFmETmENCMU/A/zj8Lyaj1lkgEepKepvd6240tBRvlw==. (6817 bytes)

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2018-12-29T01_20_16_929Z-debug.log
ERROR: Job failed: exit code 1