use consistent quoting style

  - 'string without quotes'
  - "string with 'single' quotes"
  - 'string with "double" quotes'
  - 'string with \'single\' and "double" quotes'
add anchor to each section in change log
Merge pull request #1436 from davidchambers/quotes

use consistent quoting style
Merge pull request #1437 from davidchambers/anchors

add anchor to each section in change log