Version 8.0

- Added :NeoComplCacheClean command.
- Added sorter_length.
- Changed default rank in omni_complete.
- Changed filename_complete behavior.
- Changed g:neocomplcache_enable_auto_close_preview default value.
- Changed g:neocomplcache_temporary_dir default value.
- Deleted abbrev_complete source.
- Deleted debug message.
- Disabled restore of foldinfo.
- Fixed completion error in vim_complete.
- Fixed g:neocomplcache_same_filetype_lists error.
- Fixed initialization problem using neocomplcache#initialize().
- Fixed neocomplcache initialization.
- Fixed refresh behavior.
- Fixed search patterns behavior.
- Improved cache behavior.
- Improved compare_rank.
- Improved complete words behavior.
- Improved documentation.
- Improved rank behavior.
- Improved remove next keyword behavior.
- Improved restore of window position.
- Improved save foldinfo feature.
- Optimised memory.
- Supported string cache.