Commented code and separated verbosity option from list option
Restricted default regular expression to only include files with
filetype
Fixed bug in regex handling
Commented file
Removed urllib
Increased robustness with improved error handling on http 404 on
downloading as well as valueerror on invalid urls
Fixed bug on downloading relative file links
Added exception handling on saving data
Added measuring of file size downloaded
Added quick-exit if no matching patterns were found