* fixed issue #3075
* update the known issues document, as some issues have already been fixed
* speed up equality lookups in unique vpack indexes
* Allow for re-use of RocksDBKey objects through transaction leaser.
* Converted all RocksDBKey variants to non-static constructors.
* remove API docs for endpoints that were deleted in 3.0
* remove unused variable
* set all scalar values in the ctor, so check tools do not complain
* move Result objects
* prevent potential nullptr access
* remove ambiguous boolean parameter with no clear meaning
* make code check tools happy
* don't allow copying cache Findings, allow moving Results
* the debug functionality for counting RocksDB key ranges was broken
this produced sporadic test failures
* remove superfluous iostream include
* fix range checks
* don't leak if an error happens during database removal
* try to simplify Result a bit
* try to deletion checks a bit more robust
* Testing hash for documents
* fixing logspam error
* added base support for kHash in the edge index
* Current version of hash enabled edge index
* removed rocksdb key type byte, dynamic prefixes for hash-index
* Fixing issues with key classes
* Fixing merge conflict
* Fixing version with semi-working hash index
* fixing various issues
* Fixing hanger in EdgeIndexIterator nextExta, when _cache is disabled. Reenable cache
* Fixing geo index bounds, and fillIndexes error handling
* Adding back failure point
* Fixing RocksDBKey::vertexId
* Added version check on startup
* Fixing version check
* added one more check
* properly detect column families at startup
* Adding additional sanity checking
* Adding missing column family
* some fixes
* Turned off geoindex sync
* fixed error
* added asserts (untested)
* Adding more asserts
* Added recovery tests for views and fixed a few related bugs.
* Added more view recovery tests.
* Modified view recovery tests to add a waitForSync operation after.
* fixed usage of wrong view type
* fixed recovery of view change markers