add XML schema - fixes #267

set minimum Java version to 17

fix missing chmod - close #278

add error handling to install.sh

fix default prefix in help text not being the default but the actual prefix

fix output not using PREFIX variable - fixes #270

add missing double-quotes and use lower-case local variable names - fixes #271

(0) -10 -7 +7 +10 +30 tip

mercurial