Topics include:

0:00 – Letting your yes be yes, following through on your commitments, and paying attention to opportunity cost
6:40 – When Ember releases actually become LTS versions
9:13 – Why we need "test apps" when developing Addons
16:50 – How to use newer syntax when authoring Addons that support older Ember versions
22:07 – How angle brackets change our component implementations
31:46 – How to make the APIs of our domain components more portable
38:45 – How to reuse code that has implicit data dependencies, and the Halting problem

Links:

Mirage's example test apps
Ember CLI Tailwind's example test apps
Nested Angle Bracket video
Ember Collapsible Panel