Allow searching multiple words without wrapping in quotes

[hugovk]

Before

$ pep -n "dead batteries"
Score	Result
90	PEP 594: Removing dead batteries from the standard library
55	PEP 288: Generators Attributes and Exceptions
55	PEP 363: Syntax For Dynamic Attribute Access
55	PEP 476: Enabling certificate verification by default for stdlib http clients
52	PEP 349: Allow str() to return unicode strings

https://peps.python.org/pep-0594/
$ pep -n dead batteries
usage: pep [-h] [-u URL] [-p PR] [-n] [--clear-cache] [-v] [-V] [search]
pep: error: unrecognized arguments: batteries

After

$ pep -n "dead batteries"
Score	Result
90	PEP 594: Removing dead batteries from the standard library
55	PEP 288: Generators Attributes and Exceptions
55	PEP 363: Syntax For Dynamic Attribute Access
55	PEP 476: Enabling certificate verification by default for stdlib http clients
52	PEP 349: Allow str() to return unicode strings

https://peps.python.org/pep-0594/
$ pep -n dead batteries
Score	Result
90	PEP 594: Removing dead batteries from the standard library
55	PEP 288: Generators Attributes and Exceptions
55	PEP 363: Syntax For Dynamic Attribute Access
55	PEP 476: Enabling certificate verification by default for stdlib http clients
52	PEP 349: Allow str() to return unicode strings

https://peps.python.org/pep-0594/

[codecov]

Codecov Report

Merging #6 (f65c26a) into main (ff00762) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #6   +/-   ##
=======================================
  Coverage   97.67%   97.67%           
=======================================
  Files           4        4           
  Lines         172      172           
=======================================
  Hits          168      168           
  Misses          4        4           

Flag	Coverage Δ
GHA_Ubuntu	97.67% <ø> (ø)
GHA_Windows	97.67% <ø> (ø)
GHA_macOS	97.67% <ø> (ø)

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