nnn v5.3 Mai Tai

nnn v5.3 Mai Tai release notes.

• add native preview pane (P) with automatic .npreview support
• fuzzy filtering improvements:
  • scoring, ranking, character arbitration
  • dimmed matches (works with string filtering also)
• native prompt - cycle entries in the current directory with TAB
• enter a directory that exactly matches the filter with /
• support Alt-Esc to quit a context with or without an active filter
• optimize ncurses rendering with leaveok()
• lazy-load plugins when requested
• disable linking libreadline by default; use make O_NORL=0 to enable it
• show the runtime bookmarked directory path in the help menu
• add O_BENCH to exit after startup for benchmark runs
• add stats plugin to show complete file information in a pager
• add tnp terminal note-pad plugin
• add Kitty drag-and-drop support to dragdrop
• plugin nmount improvements:
  • unmount all external USB partitions with u
  • fill prompt with last input on Up, clear on Down
• clear stale Kitty graphics placements when closing video previews in preview-tui
• use HOST_CC and HOST_CFLAGS when building the icons generator
• fix shell quoting in preview-tabbed
• fix context selection and active-tab handling when cycling contexts
• fix selection-path unescaping during selection edits
• reconcile off-screen selections correctly before inversion
• do not automatically enter directories without read permission
• add safety checks for session header fields
• support escaping name completions in the native prompt
• handle arbitrarily long paths when escaping shell arguments