ali-oss-slim v5.3.1

ali-oss-slim

modified from: ali-sdk/ali-oss

change:

• use lib/slimUrllib.js instead of huge urllib package
• drop stream support
• trim required code from lib/client.js

remaining base method:

• OSS.Wrapper
  • listBuckets
  • list
  • get
  • put
  • copy
  • delete
  • deleteMulti