Changes in version 0.1.4 (2025-05-21)                  

  - In 'mount_hours()': emphasizes the initial condition that the tuple
    lessons be recorded separately from the other lessons (in 'TPL', NOT
    in 'LSS').

  - In 'mount_hours()': remove the inutil comment about the "global
    assignment" ("... will affect the environment of the function from
    which this internal function is called, NOT the
    global-environment").

  - In 'mount_hours()': we added a control over the resulting number of
    gaps (teachers should not get more than two gaps).

  - I decided to give up 'testthat' (I removed 'test-mount_hours.R',
    which took a long time); instead, I added the exported function
    'verify_matrix()'.

  - I wrapped the examples in '\donttest{}'.

  - minor improvements to documentation.