2.3.0 bump version

[eromano]

Please check if the PR fulfills these requirements

[x] The commit message follows our [guidelines](https://github.com/Alfresco/alfresco-js-api/wiki/Commit-format)
[x] Tests for the changes have been added (for bug fixes / features)
[x] Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x")

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] Documentation
[x] Other... Please describe:

What is the current behavior? (You can also link to an open issue here)
Update package.json to 2.3.0

What is the new behavior?

Does this PR introduce a breaking change? (check one with "x")

[ ] Yes
[ ] No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[codecov-io]

Codecov Report

Merging #325 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development     #325   +/-   ##
============================================
  Coverage        84.06%   84.06%           
============================================
  Files               22       22           
  Lines             1054     1054           
  Branches           207      207           
============================================
  Hits               886      886           
  Misses             168      168

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