add instances of Default QueryRunner for Text, UTCTime, LocalTime, and Maybe variants. relates to #12.
Merge pull request #15 from dbp/dev

relax dependencies on reflection and containers
Merge pull request #16 from dbp/add-query-runner-instances

Add query runner instances
runUnpackspec
Implement general toQueryArr
Pull out mapUnion
Remove toQueryArr11 and use toQueryArrDef
Logical QueryArr operators in terms of ExprArr
Operators.Numeric in terms of ExprArr
QueryArr.cat in terms of ExprArr.cat
Remove unused 'opArr'
Remove unused 'wireBinOp'
Add ExprArr.unOp
Remove dead comment
Unary 'QueryArr's in terms of 'ExprArr'
Remove unused unOpArr
Remove wireUnOp
Remove unOp
Bump version
modC and timesC in terms of more up-to-date combinators