Merge pull request lefticus#4 from lefticus/cpp-doom-stream-temp

cpp-doom compiling

Fixed some typos in readme.

Fixed some typos in readme.

let this be Crispy Doom 5.7.1

adjust Choco commit that the release will be based upon

This will be Crispy Doom 5.6.4

further unify par time handling

prepare for Crispy Doom 5.6.2

Fixed a typo introduced in the previous commit.

some more cosmetical README.md tweaks

Debian 10 has been released, adapt build instructions accordingly.
Also, give the removed autoload mechanism its own paragraph.