[maven-release-plugin] prepare release v2.6.0.Beta2
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/2.6.0.Beta2'
Next release version is 2.6.0-SNAPSHOT.
PLINK-268 make Permission a concrete class
fix compiler errors
PLINK-268 differentiate between class and instance permissions
PLINK-268 updated methods in reference docs