Reaper updated to 5.16

• improve screen layout for graphical scripts, add support for disabling metering, options:no_meter
• add General Dynamics gate/compressor/expander
• add Spectral Hold
• improve Graphics Analyzer and Oscilloscope plug-ins (thanks Tale)
• improve envelope step sizes for enum parameters with extended ranges
• fix PDC glitches on playback start/latency changes/wet-dry change
• fix potential deadlock when opening pin mapper
  Action list
• improve auto-wide layout
• prevent scroll of action list after action assign/delete
  Docks
• improve docked FX chain behavior when switching project tabs
• improve docked MIDI editor behavior when switching project tabs
  FX
• include selected JSFX in the browser Cockos view
• improve floating FX windows focus behavior when restoring from project/screenset
  Glue
• avoid generating filenames from take names that are too long for filesystem
• obey recording preference for maximum file size .
  MIDI
• fix bugs when humanize used from the list editor, better support for humanizing multiple contexts
• added option to always prompt when importing MIDI with simple tempo information
  Recording
• fix automatic import of recorded .mid files (issue since 5.11) .
• option to use alternate keyboard section also affects MIDI, OSC devices .
• improve position/length of looped MIDI overdub recording .
  Render
• improve handling of non-latin characters when inserting wildcards .
• always skip process of muted tracks when rendering and using full-speed render .
  Undo
• improve added undo point on project undo history load .
• fix undo point addition when moving FX via mixer .
  Arrange
• improve vertical scroll behavior when resizing arrange .
  Envelopes
• better handle edge points when copying regions, moving time in project .
  Freeze
• fix stability issues when performing complex freeze operations .
  ID3v2 reading
• fix possible crash reading long UTF-16 strings
  LAME
• allow configuration of quality/speed settings, more sensible default setting
  Marker/region manager
• do not seek on sort by column .
  Media explorer
• do not prompt for tempo map import of MIDI items when using tempo matching
  Mixer
• improve mouse cursor feedback when alt+drag used to move FX/sends .
  OSX
• fix mouse issues after certain popup menus (such as docker menu)
  Panning
• optimize pan law calculation, improve rounding
  Project
• prevent writing user-entered newlines into project files
  ReaPlugs
• improve gain display of ReaEQ/ReaXcomp spectrum analyzer
  ReaScript
• increase image/font handle count limit for gfx_* in Lua to match that of EEL
  ReaTune
• remember the exact key set by user, rather than just the valid notes
  Sends
• fix tiny glitch at playback start when using newer pan modes and a non-0dB pan law .
  Windows
• properly display F13-F24 in actions list .
  API
• add Envelope_FormatValue, TakeFX_GetEnvelope, TakeFX_* which mirror TrackFX
• add TrackFX_AddByName, deprecating TrackFX_GetByName
• add TrackFX_GetIOSize, TrackFX_GetPinMappings, TrackFX_SetPinMappings
• extend TrackFX_* to allow access to Record Input FX and Monitoring FX
• fix CreateTrackSend for hardware outputs, improve validation/return value