added new links about sqlite optimization
started new article about index and search in kvlite
added few new TODOs
added new TODO
added new function dict2flat()
modified dict2flat(), root is not important
added scheme building, command: scheme
updated part of doc: index and search
some fixes
fix typos
added test cases for dict2plain
added SUPPORTED_VALUE_TYPES mapping
fix typos
added new links
added new tests
added documents structure report
starting to add index support
scheme support updates
migrate TODOs to github issues
added ITEMS_PER_REQUEST