Completed tasks

[SimonLab]

ref: #25

[codecov]

Codecov Report

Merging #26 (6344af7) into master (288d0ff) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #26   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         6    +1     
  Lines           62        84   +22     
=========================================
+ Hits            62        84   +22     

Impacted Files	Coverage Δ
lib/models/todoList.dart	100.00% <100.00%> (ø)
lib/screens/completed_tasks/completed_tasks.dart	100.00% <100.00%> (ø)
lib/screens/tasks/tasks.dart	100.00% <100.00%> (ø)
lib/screens/tasks/todolist.dart	100.00% <100.00%> (ø)

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[nelsonic]

@SimonLab this is looking good so far. 😍
Please assign when you feel it's ready for review/merge. 👍
Thanks. 🌻

[SimonLab]

I've updated the branch with the code from the master branch and tested that everything is working correctly.
I think this PR is ready for review @nelsonic
Next I'll update the code to add Riverpod, see #27

[nelsonic]

@SimonLab looks great. 🎉