Does not support column names with square brackets

[zarino]

Discovered by @IanHopkinson over here: scraperwiki/datatables-view-tool#48

Given a database created with the following SQL commands:

CREATE TABLE data("hello[1]", "hello[^]", "goodbye");
INSERT INTO data VALUES ("first", "london", "berlin");
INSERT INTO data VALUES ("second", null, null);

Querying the database directly with the scraperwiki-python library:

import scraperwiki
print scraperwiki.sql.select('* from data')

Returns the incorrect column names:

[OrderedDict([
  (u'hello', u'london'), 
  (u'goodbye', u'berlin')
]), OrderedDict([
  (u'hello', None),
  (u'goodbye', None)
])]