BaseX 6.2.9

BaseX 6.2.9 is our latest minor version, available via the Maven repository.

[ADD] Server output added: "Server stopping"/"Server stopped"
[ADD] Command input via STDIN enabled
[MOD] Minor visual tweaks
[MOD] XQuery Speedups (Math `->` StrictMath, FLWOR rewritings)
[FIX] Command parsing (e.g. CREATE DB TEST# ..)
[FIX] TreeView fixes