[AESH-24]
Added an interface that works as a handler for interrupts.
updated to 0.25
[AESH-29]
added separator char and boolean flag to enable/disable
appending a char at the end of a completion.
refactored and added some tests.
[AESH-34]
æsh will now detect =>,=<,<=,>= and not regard them as redirections
updated to 0.26
[AESH-37]
Fixed FileUtil for now, but it should be cleaned up to work better
with the changes to CompleteOperation
[AESH-38]
fixed width bug
[AESH-39]
Parameter.name is now mandatory
[AESH-40]
Changed CommandLineParser to handle multiple Parameters.