v0.26 - Overly Attached Argument

Argument

Added support for various attached versions of passing non-optional flag arguments:

--longhand=arg
-l=arg
-larg
-abclarg

Lexer

Added a simple lexer for complex commands passed as single argument:

Nushell

Used the lexer to patch arguments as these are currently passed mostly unprocessed to the completion function. This is a workaround and has some edge cases but should overall improve the Nushell integration.