Merge branch 'master' of https://gitlab.cim.rhul.ac.uk/uxac009/javatester

src/main/java/uk/ac/rhul/cs/javatester/BaseTester.java

src/main/java/uk/ac/rhul/cs/javatester/CodeTester.java

src/main/java/uk/ac/rhul/cs/javatester/Config.java

...main/java/uk/ac/rhul/cs/javatester/SubmissionWrapper.java

src/main/java/uk/ac/rhul/cs/javatester/TesterOutput.java

src/test/java/uk/ac/rhul/cs/javatester/UnitTests.java

...st/java/uk/ac/rhul/cs/javatester/solution/Assignment.java

...t/java/uk/ac/rhul/cs/javatester/solution/LongerInOut.java

...java/uk/ac/rhul/cs/javatester/solution/NullPtrMethod.java

.../java/uk/ac/rhul/cs/javatester/solution/PrivateClass.java

...t/java/uk/ac/rhul/cs/javatester/solution/SimpleInOut.java

src/test/java/uk/ac/rhul/cs/javatester/solution/Storage.java