NEW: realpath python implementation
added a few more scripts
new command for-each-line (poor people's GNU parallel)
new command fancytee
urldecode: read from stdin if no args given.
fancytee: fix --help output
NEW: batch-ssh
add sshping script
add urlencode
new: add: sum cols for csv file (Excel's SUM/SUMIF)
basic doctest for 'add'
add: experimental Tabulation class implementation
add: re-implemantation using Tabulation class
new: args script
fewliner: fix minor bug
add: implemented avg/min/max/percentile calculation
add Fix bug in case there's only one column
new cutlink
args: new line-numbering option, and fixes

* Introduced a new -n/--number option to print line number
* Fix terminal width detection (subtract width of '...')
* Quote $args so that more than one white spaces printed as-is
* If colums > 60, show tail 10 chars as well for long argus
[args] NEW: --color and --escape options.