adds converter system which converts expressions to string arrays
adds converter which support the current functionality
adds hasPlural method to the TranslatableExpression class
replaces the getString methods to convert the expressions to strings with the new conversion system
adds two new converters. new array converter and conditional converter
adds Test with an annotation with an array field
adds an invocation expression converter experimental
reformates code
moves converter exceptions into another package
fixes NPE which occurred if Spoon couldn't load the method of an invocation
adds javadoc
fixes a bug (the program handled every literal expression as a string, but numbers (integer, float, double, ...) are allowed too) and adds tests
Merge remote-tracking branch 'origin/master' into convert_system
improves log message from ConversionException
modifies converter. converter converts to object array now
implements invocation expression converter
fixes typo and sets exception messages
implements a new class expression converter and adds an abstract class for invocation and new class expressions
Merge remote-tracking branch 'origin/convert_system'