title: bulk insert list values with SQLAlchemy Core
body: <p>I'd like to bulk insert a list of strings into a MySQL Database with SQLAlchemy Core.</p>
  
  <pre><code>engine = create_engine("mysql+mysqlconnector://...")
  meta = MetaData()
  meta.bind = engine
  </code></pre>
  
  <p>My table layout looks like this - together with two currently unused columns (irrelevant1/2):</p>
  
  <pre><code>MyTabe = Table('MyTable', meta,
  Column('id', Integer, primary_key=True), 
  Column('color', Text),
  Column('irrelevant1', Text)
  Column('irrelevant2', Text))
  </code></pre>
  
  <p>Unfortunately the following does not work - it inserts an empty row. What's the right way to do this?</p>
  
  <pre><code>MyTable.insert().execute(['blue', 'red', 'green'])
  </code></pre>