Fix bug in export of `List.member`
Merge pull request #130 from ngunn/dev

Singleton Nil consequential change to compiler (minor)
Merge branch 'dev' of https://github.com/evancz/Elm into dev
Fix bugs in `container` and an empty `flow`
List.js: fix long-standing bug in append (2 chr$ change)

Present since initial version: 389a6f5309a2ab62684b85dddb5766c3a263938d