v2.40

• add support for custom telegram api id/hash
• fixes #53 - add support for viewing/downloading video messages
• set current chat upon first key press
• fix for opening attachments with space in filename
• fixes #52 - gracefully handle invalid setup option input
• disable cache by default and mark experimental
• ensure message cache thread allow context switch
• add wcswidth fallback to wstring::size
• improve db performance for message cache and emoji list
• get quoted messages from cache if not yet fetched by ui
• fixes #51 - dynamically detect ncurses prefix on mac
• configurable attachment prefetch level