Merge pull request #30 from airportyh/array_and_context

Merge pull request #29 from airportyh/fromIndex

Support for ES5 requirement of 3 parameter for callbacks being the original array and context set for the callback if provided as second parameter for iteration methods.

Added support for fromIndex (2nd) parameter for indexOf and lastIndexOf.

added breaking change note

Merge pull request #28 from airportyh/reduceRight_and_some

Merge pull request #27 from airportyh/docs

Changed some to just an alias to any, removed duplicate tests.

Fixed wording of spec.

Added support for `some()` and `reduceRight()` methods to match ECMAScript 5 spec.

Added reduceRight.

Made API docs parameters more consistent.

Added tests for count.

Release 0.4.3

update to-function