#143 and#175 are interrelated (they change the/query response format), so I decided to consolidate the fixes into 1 PR.

Fixes#174

dates,timestamps, andtimestamptzs are no longer converted to JSDates.

date before:"2020-01-01T00:00:00.000Z"

date after:"2020-01-01"

Fixes#143

Queries w/ multiple statements now return results from all statements instead of returning an empty list.

select 1 as a; select 2 as b before:

[]

select 1 as a; select 2 as b after:

[  {"columns": ["a"    ],"rows": [      [1      ]    ]  },  {"columns": ["b"    ],"rows": [      [2      ]    ]  }]

Fixes#175

Columns with the same alias now works, but this required a breaking change in the response format.

select 1 as x, 2 as x before:

[  {"x":2  }]

select 1 as x, 2 as x after:

[  {"columns": ["x","x"    ],"rows": [      [1,2      ]    ]  }]

Additional notes

Previously, the response is a list of rows, but now that we support multi-statement queries, the response is a list of query results. In other words:

Type of response before:Record<string, unknown>[]
Type of response after:{ columns: string[]; rows: unknown[][] }[]