* Fix nexus publishing script

 * Fix double underscore handling during normalization

 * Update Spring framework version

New functionality

-----------------
  * Add folder decoupling support
  * Support multiple acls in cookies
  * Support structured metadata in `resources` api call
  * Rename API call returns `metadata` and `context`
  * Support start offset and end offset as expression
  * Get the details of a single resource by asset_id
  * Search by asset id
  * Support metadata fields reordering
Other changes
-------------
  * Fix `verifySignature` timestamp units
  * Fix transformations API call

Version 1.31.0

Version 1.30.0

New functionality

-----------------
  * Allow setting the user agent (cloudinary#235)
  * Add support for Apache http-client 4.5 (cloudinary#234)

Other changes
-------------
  * Fix test name in `ExpressionTest` (cloudinary#233)

Fix `api` reuse bug when calling `cloudinary.search()` (cloudinary#232)

* Add `oauth` support to Admin Api calls. (cloudinary#230)

* Fix connection reuse when using apache-http-client (versions 4.3 and 4.4) (cloudinary#231)

New functionality

-----------------
  * Support `type` parameter in `Uploader.updateMetadata()` (cloudinary#226)
  * Add `downloadFolder` method (cloudinary#219)
  * Add eval upload parameter (cloudinary#217)
  * Add support of SHA-256 algorithm in calculation of auth signatures (cloudinary#215)
  * Support different radius for each corner  (cloudinary#212)
  * Add support for variables in text style. (cloudinary#225)
  * Add support for 'accessibility_analysis' parameter (cloudinary#218)
  * Support new parameter and modes in `generateSprite()` and `multi()` API cals.
  * Add support for `date` param in `Api.usage()` (cloudinary#210)

Other changes
-------------
  * Fix named transformation with spaces (cloudinary#224)
  * Fix normalize_expression for complex cases (cloudinary#216)
  * Detect data URLs with suffix in mime type (cloudinary#213)

New functionality

-----------------

  * Add variable support to `Transformation.opacity()` (cloudinary#209)
  * Add support for restoring deleted datasource entries (cloudinary#207)
  * Add support for 32 char SHA-256 URL signatures.
  * Add support for `pow` operator in expressions (cloudinary#198)
  * Add signature checking methods (cloudinary#193)

Other changes
-------------

  * Fix handling of `max_results` and `next_cursor` parameters for folders api (cloudinary#203)
  * Fix `normalize_expression` when a keyword is used in a variable name (cloudinary#205)