* Made minor changes in some patterns such as removed throws clause where not needed, changed incorrect order of arguments in assertEquals
* Minor refactorings and code style changes. 1) Removed several use of raw types 2) Removed unnecessary throws clauses 3) Used lambda expressions wherever applicable 4) Used apt assertion methods for readability 5) Use of try with resources wherever applicable 6) Corrected incorrect order of assertXXX arguments
* Removed unused import from Promise
* Addressed review comments
* Addressed checkstyle issue
* added pumlid where it was missing and possible
* removed pumlid where it generated a bad image
* regenerated some incorrect puml's
* added 'left to right direction' puml prefix to some diagrams to improve the automatic layouting
