Follow Semver rules when sorting tags

[dylang]

When you go to the Tags page for any repo using semver:

Today:

• 1.0.0-1
• 1.0.0

It should be:

• 1.0.0
• 1.0.0-1 The - means pre-release or release candidate, it is older than 1.0.0.

[isaacs]

Personally, I'd prefer chronological ordering (which will end up being semver-sorted most of the time anyway.)

[dylang]

Oh yeah, way better idea. Closing this and opened #44 instead.