notify user when error is raised when evaluating breakpoint condition[2] - #157

…am is stopped at the exception

2. update a comment

2. fix the issue of a dirty evaluation environment cause the next evaluation failure.

2. keep only one CompletableFuture in evaluate

… not required for evaluation. (#156)

* process on the scenario when no projectName is set for expression evaluation.

* MAINCLASS => MAIN_CLASS

* possible -> candidate

* notifyType -> notificationType

* typo