Updated version number for development (1.4.dev).
Switched ignores from Mercurial to Git format.
Upgraded to latest python-daemon and lockfile versions.

`lockfile==0.8 was hosted on a DynDNS-backed server, which (as such things are
`wont to do) eventually went away.

To make this easier next time, I've switched the dependencies over to a Pip-
friendly `requirements.txt` file.
Updated version number for release (1.4)
Updated version number for development (1.5.dev)