parser: added support for USE INDEX syntax
execution: Improved plan printing
execution: Use cardinality for more accurate index selection
execution: Add use index to subqueries
tests: More readable exec_cases.txt
schema: disallow caching for tables with fixed length binary columns
update_stream: allow char columns in primary key
inserts: allow inserts with unspecified columns lists
more reliable ddl throttle scheme
stats: track row not found separately from misses