Remove unused args variable
Add basic socket read/write measurement
Output top n processes only, and in descending order of net I/O
Add progress bar to nettop analysis
Merge remote-tracking branch 'upstream/master'
Add comment stating known limitations of network analysis
Add support for read/write events in fd-info.

Eventually, partial payload should be displayed, as in strace
Move 'const' lists of syscall names from instance variables to class variables
Change formatting of output to a more readable format

This format will also help distinguish entry vs exit of syscalls
which will be added soon to the script