* Fixed analyzer definition in test (definition should be object). Fixed proper reporting of invalid parameter error.
* Restored ability to parse string-encoded json object in analyzers rest hadler. Test was reverted to pass string again.
* Fixed test run
* Get rid of shared ptr to simplify code.
* validate analyzer properties, do not return `null` for identity analyzer properties
* fix some tests
* Fixed tests for new analyzer parameters validation. Added explicit test for analyzer parameter validation
* update iresearch, fix analyzer tests
* fix more tests
* fix tests
* store analyzer properties as vpack
* more compilation fixes
* Updated iresearch
* Tests compilation fixed
* Test run fixes
* Test run fixes
* Fix test run
* Fixed all IresearchTests
* Fixed V8Analyzers tests
* Added ngram and delimeter analyzers vpack config
* Added ngram and stem analyzers vpack parsers. Added tests
* Fixed internal issue #593 Fixed build issue
* Fixed tests
* Fixed Gtest tests
* Changed test run to fix Mac failure
* Mac tests debugging
* Fixed jslint errors
* test tracing added
* Taken account for VPackSlice operator== false negatives
* do not persist legacy analyzers into _analyzers table
* fix arangosearch upgrade in cluster
* get rid of Vasiliy's shit
* address review comments
* ensure link is synchronized after creation in upgrade
* fix compilation error
* minor cleanup
* fix tests
* distribute '_analyzers' collection as '_graphs'
* comment out Vasiliy's shit part 2
* issue 526.6: implement REST and V8 handlers for the iresearch analyzer feature
* address typo
* remove excess comments
* temporarily comment out tests failing on MacOS
* temporarily comment out more MacOS-only test failures