Resolved Un-handle Promise rejections

Merge pull request #42 from contentstack/error_handling

Unhandled Promise rejection issue resolve

Publish content fallback

New Features:

• [Entry] - Publish fallback method added
• [Query] - Publish fallback method added
• [Asset] - Publish fallback method added
• [Assets] - Publish fallback method added

Type definitions and retry on request failure

• Typescript definition added
• Retry limit for fetch request
• Retry delay options for fetch request
• Retry on error occur for fetch request

Include content type in entry fetch

v3.10.1

include content-type in single entry

Removed default timeout for request

v3.10.0

Removed default timeout

Stack instance issue resolved

Merge pull request #32 from contentstack/automation

Stack instance issue resolved

Stack instance issue resolved

Merge pull request #31 from contentstack/automation

Stack instance issue resolved

Support to added in request fetch option as timeout and custom settings.

• Allowing support to add a timeout for request.
• Fetch option added for request.

Hotfix

• Updated in entry module.
• Removed the unwanted code

Global fields support

• [Stack]: Added support for method getContentType()
• [ContentType]: updated method fetch()