#567 (Mar 1, 2018, 12:50:11 AM)

1. merged (detail / hgweb)
2. generalized lemmas about orthogonal transformation (detail / hgweb)
3. more explicit infixl (see initial 1edf0f223c6e);
   clarified name; (detail / hgweb)
4. clarified use of vec type syntax; (detail / hgweb)

Started by an SCM change

This run spent:

• 9.5 sec waiting;
• 1 hr 13 min build duration;
• 1 hr 13 min total from scheduled to completion.