Improve mapping of nested arrays.
added possibility to specify any river options
support changing indexName with river without loosing the correct collection name
make serialize more robust for deep models with empty parts
make serialize compatible with nested arrays and their mappings
first support of bulk indexing mode
forgotten callback
use containEql instead of include
resolve conflicts
Merge pull request #17 from mongoosastic/albanm/feature/bulk-and-array-indexing

Albanm/feature/bulk and array indexing