fixed displaying bit columns would throw a TypeError on python 3.

[kristianperkins]

For this fix string_types is basestring in python 2 and str in python 3. Bit fields are represented as bytes which are strings in python 2 but not in python 3.

This is how they are displayed atm in different python versions:

+---------+---------+
| value   | python2 |
+---------+---------+
| true    | ^A       |
| false   | ^@       |

+---------+---------+
| value   | python3 |
+---------+---------+
| true    | b'\x01' |
| false   | b'\x00' |

So also need to think about how they should be displayed. Unfortunately bit data types are inconsistent between different DBs: Oracle doesn't have a bit data type, SQL Server does and MySQL has a bit data type that can be up to 64 bits long.

[kristianperkins]

Looks like the tests are failing. I haven't looked at them yet but I'm guessing a (test) dependency has changed and is causing the failures. Running nosetests on the previously passing commits fails now too.

[coveralls]

Coverage remained the same at 84.207% when pulling b1581c9 on kristianperkins:master into 1b6f0b8 on jaysw:master.

[jaysw]

Thanks KP, much appreciated!