Update README.md
Merge branch 'develop' of github.com:eXist-db/exist into develop
Prevent NPE, as reported in https://github.com/eXist-db/exist/issues/254
Revert "Update README.md"

This reverts commit e85733fe8ac3a7880682c369a9b8a84631a5464f.
Merge pull request #257 from dizzzz/develop

Improve measuring minFreeDiskSpace code
* updated betterFORM to version 5.RC7 (switched from ehcache to infinispan, fixed tomcat 8 issues)
[bugfix] Prevent concurrency issue in XQueryURLRewrite: static rewrite actions may be modified by several threads, causing ConcurrentModificationExceptions.
Merge pull request #258 from wolfgangmm/develop

[bugfix] Prevent concurrency issue in XQueryURLRewrite
[ignore] Remove the "dynamic-cardinality-check(" etc. output from the toString methods of selected expression objects. The information never helped me debugging and makes error messages unreadable.
[bugfix] ArrayIndexOutOfBounds in new range index: Lucene returns an offset positioned at the end of the byte array to indicate that the value was not found.
[bugfix] new range index: optimised lookup needs to set correct static type in analysis.
[bugfix] lucene and new range index: wrong comparison of QNames, causing attribute and element names to be mixed up.
Merge pull request #259 from wolfgangmm/develop

Small fixes to new range and lucene indexes
[extension] - update betterform 5.0rc8
Merge pull request #260 from zwobit/develop

[extension] - update betterform 5.0rc8
Merge branch 'develop' of github.com:eXist-db/exist into develop