Fix old comments
Code cleanup: make easier to debug.

* Split variable assignment.
* Always use multi-line blocks.
* Always use block form of `if`.
Use bind instead of apply in logger
Restore apply as a fallback
Merge pull request #9519 from christophercurrie/logger-bind

Use bind instead of apply in logger
Merge pull request #9506 from rwjblue/split-var-declarations

Make things easier to debug.
Merge pull request #9475 from lan0/fix-old-comments

Fix old comments
Deprecate context switching for of {{each}}.