1.6.1

Add ZuliaDump and ZuliaRestore commands
Upgrade to Lucene from 8.0.0 to 8.2.0
Lazy create create associated files collections in mongodb
Increase max boolean clauses to 128k from 16k
Switch document mapping to use gson instead of custom code
Use bytesref sorting instead of string sorting when sorting documents to prevent problems with korean characters
Use java 11 source and target level
mongodb 3.10.0->3.11.0
grpc 1.20.0->1.23.0
commons-pool2 2.6.0->2.7.0
jcommander 1.72->1.78
json-io 4.10.0->4.10.1