Add 1.2 support
Test 1.2 on travis
Merge pull request #175 from brainopia/master

Cassandra 1.2 support
By default drop_keyspace should use current keyspace
Merge pull request #176 from brainopia/master

By default Cassandra#drop_keyspace should use current keyspace
Ease ability to invoke flush_batch directly

```flush_batch``` is useful enough to invoke directly, but it requires an argument which can be omitted as empty hash.
Merge pull request #182 from from brainopia/master

Ease ability to invoke flush_batch directly
Support removal of multiple columns
Merge pull request #183 from brainopia/remove_multiple_columns

Support removal of multiple columns
Update changelog and version number
Add native dynamic composite decoding.
Merge pull request #184 from nearbuy/optimized-dynamic-composite

Add native dynamic composite decoding.
Precompute @hash in native extensions.

Otherwise if you call .hash later, it incurs a call to .pack,
which is slow. The Ruby versions have always done this, just
the native optimizations were missing it.
Be sure to call packed_string.hash, not self.hash.

self.hash returns the right value, but unfortunately does it by
calling self.pack.
Made iteration functions of OrderedHashInt to return self as it is expected for a regular hash
Merge pull request #185 from fester/ordered-hash-each-fix

OrderedHashInt/OrderedHash returning self for iteration functions
Merge pull request #186 from nearbuy/precompute_hash

Precompute hash in native extensions
disabling native extensions for Windoze
Merge pull request #189 from jacek99/master

#188: disabling native extensions for Windoze
Updated version and changelog for new release