Use urlsplit() instead of urlparse()

[adamchainz]

urlparse() allows for “parameters” before the ? in the URL. dj-database-url does not use these parameters.

urlsplit() supports a later (1998) RFC and does not parse such parameters. It's thus a bit faster.

Anthony Sottile did a video on the subject, which taught me about this difference, and I merged a similar change to django-cors-headers: adamchainz/django-cors-headers#793

[codecov]

Codecov Report

Merging #184 (430bbfb) into master (742d74d) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #184   +/-   ##
=======================================
  Coverage   86.15%   86.15%           
=======================================
  Files           1        1           
  Lines          65       65           
  Branches       13       13           
=======================================
  Hits           56       56           
  Misses          4        4           
  Partials        5        5           

Impacted Files	Coverage Δ
dj_database_url.py	86.15% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more