add an option to remove whitespace and special caracters

[leo-smi]

add an option to remove whitespace, for example:

15 3 214 5 -> 1532145
dDaD f 45 98 - > dDaDf4598

Removing non alphnumeric:

a*_25_5-6-6$.etc -> a25566etc (only alphnumeric lasts)
Remove: ! @ # & ( ) – [ { } ] : ; ', ? / * ` ~ $ ^ + = < > “ .