Provide the answer to the 2nd question
Answer the 3rd question
Handle the 4th and 5th questions
Update the route for the markdown file POST
Use UTF-8 encoding to read file
Ask again for the markdown file
Fix answer to markdown received question
Answer that markdown was received
MineSweeper solver and answer to POST
Handle MineSweeper where columns != lines number
Answer next question
Change route to /enonce/2 to get new markdown
Added a test for POST minesweeper

Also did some tests code cleaning
Answer next question
Added DietSolver and a route/controller for POST /diet/resolve

Implementation is a dummy one for now, need to write
a real implementation
Added some tests
Implement the subset sum algorithm (dynamic programming)
Fixes for the no solution case

Also added tests
Simplified the subset sum problem algo: use only one map to store solutions
Log what is sent to /diet/resolve by the challenge bot

Also added GET /activities to retrieve what was sent
Fixed JSON returned for no solution

Also used 1st bot POST as the no solution example in the tests.