version bump 0.7.0
add signalType to PortTypeValue
fix all deserialization tests
fix all serialization tests
fix typo: portFrom -> portTo
Merge branch 'master' into typed-ports

Conflicts:
	build.gradle
	src/main/java/org/manifold/compiler/middle/serialization/SchematicDeserializer.java
	src/main/java/org/manifold/compiler/middle/serialization/SchematicSerializer.java
	src/test/java/org/manifold/compiler/serialization/TestSerialization.java
fix test cases by specifying port type correctly (as UDT)
fix regression tests by adding signalType definition to ports
Merge pull request #31 from mtrberzi/typed-ports

Ports have an expected "signal type"