Rename s:create_entry > s:create
Rename s:update_entry > s:update
Rename s:strip > s:strip_whitespace
Rename s:add_space > s:prepend_space
Rename s:rectify_lines > s:format_lines
Modify s:category_str into s:get_entry_category

- rename
- return list instead of joined str
Sort functions
Rename s:save_buffer_value > s:save_entry_meta_to_buffer
Make hateblo#saveFeed local (s:save_feed_meta_to_buffer)
Make hateblo#getEntry local (s:get)
Merge branch 'rename_local_functions' into metarw
Rename hateblo#{next,first}Page > hateblo#get{next,first}PageLink
Rename hateblo#entryID > hateblo#getEntryID
Merge branch 'rename_global_functions' into metarw
Bug fix in s:get_title (consider null string case)
Remove argument of s:check_draft
Fix flow diagram about entry_id