Bumping for candidate release of 2.6.0
Bumping for candidate release of 2.6.0

2.6.0.RC0
perwendel/spark,stylismo/spark,stylismo/spark,rokusr/spark,rokusr/spark,MouettE-SC/spark,rokusr/spark,MouettE-SC/spark,stylismo/spark,gimlet2/spark,perwendel/spark,MouettE-SC/spark,gimlet2/spark,gimlet2/spark,arekkw/spark,arekkw/spark,stylismo/spark,gimlet2/spark,perwendel/spark