#5 Add assignment count

[rdbrown0au]

Per Katzmarski, B.; Koschke, R. (2012) doi: http://dx1.doi.org/10.1109/ICPC.2012.6240486
"Program Complexity Metrics and Programmer Opinions"
add the count of assignments in class methods.

The attached patch does this, requires updating to asm-all-5.2.jar but as yet only outputs in the text output
form. It also includes the prior Java 8 patch