Added Depreciation note and link to new CLI

• As contentstack-express is deprecated this CLI is will also get deprecated. Added Depreciation message and link to new CLI

Dev dependency updated

Bug fix

• Dev dependency ('debug' module) updated

Rate limit and request retires

[Feature]

• Rate limit/network error support (calls are retried, if status code is 429 Or 500 and above)

[Bug fix]

• Sequential publishing/unpublishing (with an option to send batch )

[Miscellaneous]

• Debugger added

Callback must be a function

Bug fix

• Issue - 354688262: Cli fails on node v10+, with error Callback must be a function

Asset versioning support

Changes:

• Added asset versioning support in sync command

Bug fixes:

• CLI: One-liner code (curl) is working incorrectly for "Publish /Unpublish" command