1.4.0 "Controlled Fusion"

This release includes the ability to combine whole maps according to a value-merging function (like the existing merge() does for single values in some map types). The merge() method is sometimes present, but now only when it acts how it is documented in the JDK -- if it can't remove values as well as add them, the similar method is called combine(). This is somewhat of a breaking change, since merge() has changed to combine() in some classes that optionally implemented it; all of these classes had primitive keys or values and didn't actually implement Map. To avoid JDK8 functional interfaces, which are undefined on RoboVM, each combine() implementation takes a functional interface defined by funderby. Also new are no-arg with() methods on most map types, meant for code-generation situations where the amount of arguments isn't known beforehand.

The release also fixes some dependency issues (actually done in 1.3.1, which removed unnecessary sources deps, and 1.3.2, which updated the digital dependency to work on GWT). In the test sources, which you would need to access from this repo and not from a JAR download, there are now enum-keyed maps and sets. I didn't think these were significant enough to warrant inclusion in the main repository, since an Object-keyed map can use enums just fine, but if you want the classes, they're a tiny bit more efficient.