[MIN] XQuery, string-join optimizations
[MOD] XQuery, various optimizations in numeric functions
[MIN] XQuery refactoring: numeric functions
[MOD] XQuery: pimped rounding of numeric values
[MIN] XQuery: rounding values
[FIX] XQuery: don’t rewrite not(...cmp...) if op. may be array
[MIN] XQuery, optimize fn:string(string) →  string
[MIN] Storage: better toString() functions
[FIX] Storage, updating index structure; test added
[MIN] Storage, updating index structure: variable names
[MOD] XQuery, optimizing fn:remove()
[FIX] GUI, XQuery editor: syntax highlighting
[ADD] XQuery: Optimizations in FLWOR and comparison processing
[MIN] Serialization: speeding up constructor
[FIX] Core: only set proxy settings when non-empty
[MOD] raise an error if invalid max was used for random:integer()
[FIX] XQuery, Random Module: raise error for invalid input:
      http://docs.basex.org/wiki/Random_Module
[ADD] Option XINCLUDE (XML Parsing, GUI): (de)activate XInclude
[ADD] XQuery: simplify nested predicates. Closes #984
[MOD] XQuery: iterative evaluation of map expressions (..!..)