Added changelog
Merge branch 'master' into v0.5
Now a collection can be loaded into memory
We need to load the collection into memory, otherwise there seems to be
a timing problem and lets the tests fail
Added where and result methods
Test where you can set the result
Adjusted tests so they work better
Now in the tests we can assemble multiple fields from multiple
collections
Now fields are distinct by collections
Now not only a single but also multiple fields of a collection can be
included into the result
Added v0.5 changelog