safer test for currently running app

The previous version could fail if the specified bundle was not installed.
Here we tell "System Events" until determining it is safe to do otherwise.
add caveats for Little Snitch

note - this currently is the only app cask that does not have
a "link" or "install" stanza
flag handling consistent btw install/uninstall

This makes uninstall process flag arguments in the same manner
as install. Any argument with a leading dash is assumed to be a
flag, not a Cask.  Argument processing still needs work, unknown
flags and spelling errors are silently accepted.
Downloads the driver from the manufacturer's homepage.
Make caskroom configurable via command line argument
Clearer instructions for options
Added test for custom --caskroom argument
Merge pull request #2061 from Aigeruth/prolific-usb-serial-driver

Downloads the driver from the manufacturer's homepage.
xScope 3.6.3
Merge pull request #2070 from ahbeng/xscope

xScope 3.6.3
Add support for colorpicker type
Refactor similar method structure in dirs and files into one for re-use.
By using the name of the method calling fs_command we remove duplication
Ukelele 2.2.6
Merge pull request #2073 from SebastianZaha/ukelele

Ukelele 2.2.6
updated prey
Merge pull request #2074 from vitorgalvao/update-prey

updated prey
Asteroid 0.9.5
add font Aegyptus

This commit includes Aegyptus version 5.01
add font Aegean

This commit includes Aegean version 7.15
add font Analecta

this commit includes Analecta version 4.01