Use caret on install save

[samccone]

This fix brings us inline with how npm installs work and also brings us
more inline with how semver is supposed to be used.

Fixes #2144

[sheerun]

Probably we should put it in bower 2.0?

[samccone]

hmm, I was thinking if this is a "breaking" change.. but I think that it is not, it is not impacting old bower.json files, and just will change the behavior a tiny bit on new installs, which brings it inline more with what people expect.

[benmann]

Thought about that too and I'm all for it, however I also agree with @sheerun. Doesn't the caret ignore 0.x version updates? I don't think it will really break old packages either but people unaware of that change might be confused, especially for dependencies. We should at least communicate this very clearly.

[samccone]

Doesn't the caret ignore 0.x version updates

pretty sure no :)

[benmann]

In that case.. ignore everything I just said 👻
So the only real difference is in the minor range? ..Where being more inclusive is a plus imho.

[samccone]

👍 , I will let @sheerun make the final call on this one

[sheerun]

I bet I'll regret it, but let's try :)

[samccone]

ha @sheerun :)

[benmann]

We can always blame @samccone 😇
..I think it'll be fine though

[samccone]

🔥 🏃

-------^ me