v1.20.0 draft

[GeckoEidechse]

Features:
Initial native code for verified mod auto-downloading (Launcher#545)
Plugins v3 (Launcher#472, Mods#652, #583)
Expose Northstar.dll version to squirrel (Launcher#558)
Convar print commands (Launcher#539)
Remove "Launch Multiplayer" button (Mods#719)
Re-implement projectile kill replays (Mods#723)

Fixes:
Plugin related log error expecting more args (Launcher#591)

Contributors:
@ASpoonPlaysGames @Alystrasz @catornot @GeckoEidechse @H0L0theBard

[Slipstreamm]

i must say this is pretty poggers