v1.8.1 draft

[GeckoEidechse]

Features:
Localize masterserver errors (#333, #159)
Include server description in search (#388)
Expose IsDedicated on server vm (#179)

Fixes:
Guard against GetEntByIndex read out of bounds (#191)
Fix segfault on badly formed compressed packets (#160)
Fix bug where emit wouldn't be blocked if uppercase (#192)
Unlock SP when Coop is selected (#383)
Attempt reconnect in case of DUPLICATE_SERVER (#187)
Set default val for net_chan_limit_msec_per_sec (#196)
Open placeholder_playerdata as an input stream (#173)
LatencyFleX Implementation Update (#183)
Fix "Auth failed" when trying to play singleplayer (#184)

Contributors:
@cpdt @emma-miler @F1F7Y @GeckoEidechse @KittenPopo @KyleGospo @pg9182 @RoyalBlue1