[bugfix] commons-lang is now required by Java admin client.
Merge branch 'develop' of https://github.com/eXist-db/exist into develop
[feature] Implement IndexWorker.scanIndex method for structural index, so util:index-keys will return proper statistics.
Merge pull request #154 from wolfgangmm/develop

Implement missing index scan method for structural index
[performance] Faster insertion or addition of nodes using update extensions: eXist always reindexed the parent node, which should only be required if an index is defined on the parent or any of its ancestors. This caused a major bottleneck.
Merge pull request #155 from wolfgangmm/develop

Fix slow insert/append
avoid NPE
Revert "avoid NPE"

This reverts commit 2a86063e4036eb644150c5bd88e266123ce349a1.
Merge remote-tracking branch 'eXist/develop' into develop
avoid NPE
Merge pull request #156 from shabanovd/develop

avoid NPE