0.4.0 README update

[sigmafelix]

• Figure links fixed
• Clarification in data restrictions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.66%. Comparing base (0cd8941) to head (7246cd9).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #58   +/-   ##
=======================================
  Coverage   99.66%   99.66%           
=======================================
  Files           5        5           
  Lines         597      597           
=======================================
  Hits          595      595           
  Misses          2        2           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.