fix: add definition for state tuple type
don't use Language.expression_combine to form assignment (overkill)
fix: array notation with escapes {{
fix constructor for {key,int} {key,key,int} {key, tuple} {key, key, tuple}
fix input tuple name for update func
fix input type of DHT_symmetric::update
fixes #342
flake
Merge branch 'bmyerz/fix-342' into bmyerz/naivebayes
put back the vector constructor (used in relation_io.hpp:readTuples)