Release Notes for 2.0.0

- Updated for ElasticSearch 2.x
- Updated for ElasticSearch 5.x
- Deleted content (Posts, Profile Posts and Threads) are indexed when doing a full rebuild
- New option: "Ignore Serialized Data"
- Removed some of the node CPU stats when using version of ElasticSearch that doesn't support those stats
- Changed how some classes load for better compatibility with other addons
- New analyzer option: Custom stemming analyzer with language (indexes numbers, treats punctuation as stop words)
- If optimize mapping fails, show reason in server error log
- Node stats included info about index (creation date, analyzer type, tokenizer, language, filters)
- Node stats included info about operating system and processors