db interface redesign
store should not be transient to preserve connection parameters
removed passthru properties
removed passthru member
added javadoc for abstract functions
Store is now a generic
Store is now a generic
makes store settable by property file by initializing it in constructor
added copyright
number aggregation code separated into a different class
changed redis operators to use new db adaptor interface
added generic output operator
added javadoc
added javadoc
added javadoc
added unit test framework
changed NumberAggregation to NumberSummation
removed partition test since redis operator is not partitionable because of exactly-once
Merge branch 'DBInterfaceRedesign'