go through exercises and try to find explanations/comparisons/central code-challenges to include

[bjornregnell]

Please come with one PR per new item to include in this file: https://github.com/bjornregnell/muntabot/blob/master/src/main/scala/data.scala
Esp. the early weeks are missing questions. Se concepts here:

• in quizes: https://github.com/lunduniversity/introprog/blob/master/quiz/quiz-concepts.tsv
• in modules: https://github.com/lunduniversity/introprog/blob/master/plan/Plan.scala#L12 See our standard algorithms here:
• in all slides: https://cs.lth.se/pgk/allslides/
• in all exercises: https://fileadmin.cs.lth.se/pgk/exercises.pdf

[viggobergdahl]

Proposed adding "Kompileringsfel -> Körtidsfel" to Week 1 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/13

[viggobergdahl]

Proposed adding "referensen 'this'" to Week 5 Concepts, see PR https://github.com/bjornregnell/muntabot/pull/14

[viggobergdahl]

Proposed adding "sealed trait" to Week 6 Concepts, see PR https://github.com/bjornregnell/muntabot/pull/15

[viggobergdahl]

Proposed adding "källkod -> maskinkod" to Week 1 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/21

[viggobergdahl]

Proposed adding "Char -> String" to Week 1 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/22

[viggobergdahl]

Proposed adding "for-do -> for-yield" to Week 2 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/23

[viggobergdahl]

Proposed adding "List -> ListBuffer" to Week 7 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/24

[viggobergdahl]

Proposed adding "Try -> try-catch" to Week 6 Contrasts, see PR https://github.com/bjornregnell/muntabot/pull/25 PS. Try is already in Week 6 concepts

[viggobergdahl]

Proposed a new code challenge for Week 6, see PR https://github.com/bjornregnell/muntabot/pull/26

[viggobergdahl]

Proposed adding "classpath" to Week 4 Concepts, see PR https://github.com/bjornregnell/muntabot/pull/27