Merge pull request #1409 from btmills/issue1407

Fix: Allow line breaks in key-spacing rule (fixes #1407)
Fix: '.md' to '.html' with anchors (fixes #1415)

Markdown documentation can now reference another markdown file with an anchor and it will work for the site along with github.
ex. `working-with-rules.md#rule-unit-tests`
Merge pull request #1417 from Nate-Wilkins/patch-1

Fix: '.md' to '.html' with anchors (fixes #1415)
New: Add operator-assignment rule (fixes #1420)
0.9.2
Revert "Fix: '.md' to '.html' with anchors (fixes #1415)"
Merge pull request #1425 from eslint/revert-1417-patch-1

Revert "Fix: '.md' to '.html' with anchors (fixes #1415)"
Merge pull request #1423 from btmills/operator-assignment

New: Add operator-assignment rule (fixes #1420)
Build: Escape period in regex (fixes #1428)
Build: Filter and sort versions in gensite (fixes #1430)
Merge pull request #1431 from btmills/issue1430

Build: Filter and sort versions in gensite (fixes #1430)
Merge pull request #1432 from btmills/issue1428

Build: Escape period in regex (fixes #1428)
Fix: Adds clamping to getSource beforeCount (fixes #1427)

- Without the clamping in place, there is the possibility of passing
  negative values to string.slice and winding up with odd results.