fix query for multiple-index lookups
bump version and CHANGES
test for multi-value bugfix
Merge pull request #102 from onefinestay/fix-for-existence-checking-on-multi-index

Fix for existence checking on multi index nodes
make sure indexes are only created for types with unique attrs
no need to check is_indexable
extra docstring
check for more specific error (when missing index)
keep py2neo on v1.5 for now
extra test for create type with no unique attrs
travis build for py2neo 1.6.3 as well as default
fix to travis.yml
travis fix
bump version and add changes
Merge pull request #105 from onefinestay/create_type_should_not_always_create_index

Indexes are only created for types with unique attrs
manager.get now only queries via index
fixing tests by adding unique attrs
use return rather than else in get_index methods
extra comment
put back test_get_with_multi_value_attr_filter and added two more tests