Adding null test that fails
Intermediate state
BUGFIX on null values
BUGFIX on type convertions, a switch to cassandra 1.2.2 induced some regressions, int type must no longer be escaped in the queries. This induces the failure of some unit tests
Merge branch 'master' of https://github.com/mathieu-lornac/YACassandraPDO into experimental
Some regressions using cassandra 1.2.2
Types are always treated as ZVal internally