This allows to save the language without rewriting pocketmine.yml. Since this is a "standard" config option (something that the user might want to directly modify) it's reasonable to put it in server.properties. pocketmine.yml is generally reserved for more advanced configuration options.
this technically involves non-breaking API changes which should happen on a patch release, but I can't be bothered with the dust cleanup, so we'll just blow it away now. It doesn't hurt anyone anyway.
This was the cause of a bug with regeneration which caused players taking fatal damage under regeneration not to die correctly. On the server side they would die and immediately regenerate some health, which would cause the next attribute sync to not report the health drop to zero, which made the client unaware that it was dead.
Perhaps attributes should be forcibly synced in some circumstances, but nonetheless regeneration shouldn't apply post-death.
This is an incremental improvement over 4a6841a5a465c791b512517394241f0ac0b38739. This change works better because it also reduces disk spam of crashdumps.
This will now sleep if the server uptime was less than 120 seconds before crashing. If unattended, this will clamp down on automated crashdump spam. If attended, the user can simply press CTRL+C to abort the process and skip the delay.
This takes advantage of two key behaviours of PHP:
1. Assigning a string does not copy the string
2. Changing an offset in a string causes the string to be copied.
These two factors combined, along with the fact that blocklight and skylight arrays are usually all-zeros, allow us to produce a significant memory usage reduction of loaded chunks.
A freshly generated PM world with 3,332 chunks loaded drops from 310MB to 200MB memory usage with these changes applied.
This was suggested recently by @TheDeibo. We don't want users running source-code installations unless they are developers, and developers should know how to boot a source-code installation anyway.
