Fixed issue invoking indexers in expression lambdas introduced in 2.6.1 (#350)
Revert "Letting an exception escape from a void-returning async method that awaits other tasks will now bubble the exception all the way up (#290)"

This should fix #341

This reverts commit d8973aa70f8f748e080e7334e2ba44d61495a364.

Conflicts:
	history.txt
Release 2.6.2
Merge branch 'master' into develop