added new error
Merge branch 'IlwisCore/master'
Merge branch 'IlwisCore/master'
all changes related to the introduction of geos
changes pointers of attributerecord and featurenodes to unique pointers
added a method to determine of a object is in the list of 'coded' objects and thus is a system object
if an existing object was prepared with a illegal/non-existing url/code it would fail(correct) but retain its original implementation.
added member and implementation to ensure that a binary set is loaded when starting to work with it. Before it was possible to do a newfeature on a coverage without loading the data. same is true for a store
implemented a correct step size for the block iterator; previously it took the blocksize as step; now the step can be determined. implemented a const variant of the block(x,y,z) method
filter a block. file will contain implementations for all filter types. linear, rankorder, majority, binary, pattern,stdv
reads filter definitions
added new operation
added rasterfilters
introduced GeometryHelper class, instead of old Geometry, which helps handling the geos::geom::Geometry
some clean up after big changes in Geometry
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'

Conflicts:
	core.pro
created
fixed issue on missing check for is3D of a pixel on value access
solved #35 be storing the cache location inside the Context