Fixed #826: group all BODY[HEADER.FIELDS] (...)
Batch every 50 emails
Merge branch '826-headers'
Added clean html method to rendeder delegate
Updated to libetpan 4d5df1aec89ec19f2c51249986007267a1adea27
Added comment
Merge pull request #828 from foxinushka/feature/clean-html-in-delegate

Added clean html method to rendeder delegate
ability to get sequnce number for uid