Moving trunk to 0.4-SNAPSHOT

[zoe slattery]

Since it's going to take some time to plan out a release/development 
proposal which doesn't require a ridiculous amount of effort to 
understand, maintain and follow AND honours semantic versioning for at 
least bundles and packages AND gives some sort of guarantee that we 
provide consumers with something that all works together....

.... I will move trunk to 0.4-SNAPSHOT. I will also do a bit more 
tweaking of the trunk poms so that they are all consistent.

Zoë