v2.0.5 - non utf8 chars in query string

1. #170

  test('query containing Swedish "åäö" as sql query literal no params', testDone => {
    const STR_LEN = 10
    const str = 'åäö'.repeat(STR_LEN)
    theConnection.query(`select '${str}' as data`, (err, res) => {
      assert.ifError(err)
      const expected = [{
        data: str
      }]
      assert.deepStrictEqual(expected, res)
      testDone()
    })
  })

2. 1 less memory copy per query submitted