Make nth return default value when out of bounds
Fixed (read) docs as mentioned inn #641
Merge pull request #645 from Foxboron/read-doc-fix

Fixed (read) docs as mentioned inn #641
Include optional arg in docs (nth)
Merge pull request #641 from microamp/issue-638

Fix #638: Make nth return default value when out of bounds
Rename slots to attribute/attr
Merge pull request #648 from Foxboron/rename-slot-attr

Rename slots to attribute/attr
Fix 'some' (first logical true value or nil)
Merge pull request #649 from microamp/issue-644

Merge master onto pr/649