Fixed error causing type initializers to be invoked in the opposite order to what they should (#96)
Improved API for the topological sorter
string s = (string)65 no longer works (see discussion in #115)
Release 1.7.1
Merge branch 'master' into develop
Merge branch 'develop' into future

Conflicts:
	Runtime/src/Libraries/CoreLib/String.cs
	history.txt