```mermaid
mindmap
  root)Moodle Quiz & Question Bank(
    A[Key Points]
      A1["Moodle 4: Question Bank became extendable"]
      A2["Moodle 4.2-4.4.5: List of features completed"]
      A3["Moodle 5: New way to share questions between teachers, courses"]
    B[Quotes]
      B1["'This was a crowdfunded project... many universities have contributed'"]
      B2["'Making big changes in Moodle core is very, very difficult'"]
      B3["'We wanted to make complex sharing things possible, but also make it as easy as possible for a teacher who just wants to make a quiz and never use a question bank'"]
    C[Technologies/Tools]
      C1[Moodle Core]
      C2[Plugins]
    D[Challenges & Solutions]
      D1["Challenge: Making big changes in Moodle core"]
      D2["Solution: Breaking down the project into manageable building blocks"]
      D3["Challenge: Time zone differences with developers in Sydney, Australia"]
      D4["Solution: Switching development to Catalyst in Europe"]
```