update engines

update version 0.5.3

Fix command name screamingSnake - close exceptionraiser#23

Fix name of decrement numbers task name

Fixes exceptionraiser#11 Fix multiple selections and add number relat…

…ed string functions

update version in package.json

New icon

Merge branch 'master' of github.com:marclipovsky/vscode-string-manipu…

…lation

Fix manipulation of multiple selections - fixes exceptionraiser#19

Add chop, clean, clean diacritics, truncate, prune, repeat commands