* 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
* issue 506.3: use camel-case configuration parameter names consistntly, add a configuration version property to iresearch view meta
* backport: ensure meta version is supported
* backport: hide 'version' property from non-persistence json
* issue 410.3: remove the extra neting of ArangoSearch view definition into 'properties'
* address merge issue
* backport: address test failures
* backport: address dump test failure
* add initial implementation of scatter view rule and node
* add tests for `IResearchViewNode` and `IResearchViewScatterNode`
* add missing check
* modify IResearch execution nodes to use references instead of pointers
* use view id in searialized `ExecutionNode` representation instead of the name
* add cluster mode stubs and checks
* very first attempt to distribute IResearchViewNode
* further implementation of cluster-wide arangosearch views
* fix invalid json format
* add tests for coordinator iresearch view
* allow to retrieve a list of existing views on a coordinator
* more tests for coordinator iresearch view
* some fixes to enable query explanation
* remove Collection dependency from RemoteNode
* remove unnecessary remote ArangoSearch view scatter
* fix explanation appearance
* add some assertions
* minor fixes
* implement IResearchViewCoordinator::updateProperties
* fix view DDL issues
* handle link modifications in DDL operations
* add coordinator implementation of iresearch view links
* fix tests
* further coordinator based view DDL implementation
* further IResearchViewCoordinator implementation
* add initial implementation of AgencyMock
* fix some tests
* code cleanup
* extend test + some fixes
* more tests for IResearchViewCoordinator
* fix tests for IResearchLinkCoordinator
* some fixes after merge
* fix tests
* remove declaration of nonexistent (previously removed) method
* some fixes after review
* remove string duplication
* more tests and fixes
* more fixes and tests
* more tests
* one more test
* fix 'use-after-free' asan error
* fix non-enterprise tests issues