Steering repo toward proper literate programming
Ignored bash.math.io
Large update, bugfixes to many places. whoops.

Added aliases for quick access to
  - wi
       wireless interface
  - li
       lan interface
  - ip
       internet protocol address

Fixed bug (absolute path) to bash.io.sh

Added bash.math.sh

Added function to print the backtrace (gdb term, in bash it is now
called the call_trace), for useful debugging.

ff is now aliased to ffand, so one familiar with the process can write
```
ff conflicted
ff conflicted rm    -- or --    !! rm
```
which is convenient (and thus the change.)

* Minor updates
- ntest only pings 3 times
- concise inside_screen function
- upgraded cenmutt,mutts from an alias to a script, so that is out of this file.
- shredding is now overwritten by random digits (instead of 0s)
- alias for screen (why did this take so long?)
A host of minor updates

New interface to inet ports
Added map and rota to bash.plus