Hotfix/2.2.8: Handles null references inside group.

• While normalizing an entry, null was being passed to graphql, which makes it display references as null. Handling null reference passed to graphql which expects an array data type resolves the issue.

Added resolvers for nested fields using createResolver api

• Merged PR's #45 and #35
• Added resolvers for nested fields using createResolver api

Hotfix/2.2.6: added global field schema and disabled auto schema generation referenced fields

• attached missing global field schema in content_type schema
• disabled auto schema generation for union type referenced fields

Hotfix/2.2.5: Replaced "-" with "_" from contentTypeUid

Graphql was giving syntax error while creating node type if content type uid contains "-" character

Hotfix/2.2.4: Replaced "-" with "_" from contentTypeUid

Hotfix/2.2.4: Replaced "-" with "_" from contentTypeUid

Bugfix/2.2.3: resolved contentstack_asset type node for the file field

• Bugfix: resolved "contentstack_asset" type node for the file field. If node data is available then return node else return null value.

BugFix/2.2.2 : Added fix for reference fields

• BugFix: Added fix for reference fields.

HotFix/2.2.1 : added null value in the empty fields

• Hotfix : Added null value in the empty fields

Added option to generate the custom schema

• Enhancement : Added option to generate/set the schema of the entries as per the content type that you created in Contentstack.

Build enhanment and bugfixes: 2.1.0

• Added parallel call to bring assets and entries for gatsby build.
• PR merged to change the prefix for nodes (Which also allows getting multiple stacks attached) PR-27
• Hotfix: added validations for reference field.