Allow configurable sink

[andyferris]

Is this right? Currently the sink field is ignored. At the very least this allows me to construct a TypedTables.Table.

[codecov-io]

Codecov Report

Merging #215 into master will decrease coverage by 53.08%.
The diff coverage is 25%.

@@             Coverage Diff             @@
##           master     #215       +/-   ##
===========================================
- Coverage   92.34%   39.26%   -53.09%     
===========================================
  Files           4        6        +2     
  Lines         196      461      +265     
===========================================
  Hits          181      181               
- Misses         15      280      +265

Impacted Files	Coverage Δ
src/Query.jl	50.75% <25%> (-47.31%)	⬇️
src/types.jl	40% <0%> (-60%)	⬇️
src/API.jl	31.66% <0%> (-58.81%)	⬇️
src/ODBC.jl	45.94% <0%> (-36.32%)	⬇️
src/Sink.jl	0% <0%> (ø)
src/sqlreplmode.jl	0% <0%> (ø)

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[quinnj]

Implemented in #263