Support tilde in semver constraints

[voor]

Describe the problem/challenge you have
I want to support 1.2.x for a given version, including pre-releases, but given something like this:

1.1.1
1.1.2
1.2.0
1.2.10-build.1
1.2.10
1.2.100-build.20
1.2.100
1.3.0-build.1
1.3.0-build.2

It's hard to figure out where to put the <, since 1.3.0-build.x is considered less than 1.3.0

vendir tools sort-semver -v "1.1.1 1.1.2 1.2.0 1.2.10-build.1 1.2.10 1.2.100-build.20 1.2.100 1.3.0-build.1 1.3.0-build.2" -c "<1.3.0" --prerelease --prerelease-identifier "build"
Versions

Version  
1.1.1  
1.1.2  
1.2.0  
1.2.10-build.1  
1.2.10  
1.2.100-build.20  
1.2.100  
1.3.0-build.1  
1.3.0-build.2  

Highest version: 1.3.0-build.2

Succeeded

Changing it to something like:

vendir tools sort-semver -v "1.1.1 1.1.2 1.2.0 1.2.10-build.1 1.2.10 1.2.100-build.20 1.2.100 1.3.0-build.1 1.3.0-build.2" -c "<1.2.10" --prerelease --prerelease-identifier "build"

Causes you to miss the high numbers of 1.2.x.

Describe the solution you'd like
~ exists in several upstream semver libraries, so you can do something like:

~1.2

And it'll work for all patch versions of 1.2, but exclude anything in 1.3 or higher.

Anything else you would like to add:
While this is extremely unlikely in the exemplified upstream product (TAP), I wanted to capture this in case the scenario becomes increasingly likely. Pretty sure my use case is satisified by just picking something like 1000 for the patch release (I'm actually just using 1.2.9 now since that also seems likely to work)

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[cppforlife]

hmm, this is a toughie. any thoughts on relationship of ~1.2 and prereleases. are they included?

[voor]

Since the original use case is to avoid the prereleases of the version found in 1.3, I would say they should be included ideally.

[joaopapereira]

Sorry was reading this issue and I think I did not follow 100%. Are you suggesting that the output of
vendir tools sort-semver -v "1.1.1 1.1.2 1.2.0 1.2.10-build.1 1.2.10 1.2.100-build.20 1.2.100 1.3.0-build.1 1.3.0-build.2" -c "~1.2" --prerelease --prerelease-identifier "build"
would be

1.2.0  
1.2.10-build.1  
1.2.10  
1.2.100-build.20  
1.2.100  

But if you did
vendir tools sort-semver -v "1.1.1 1.1.2 1.2.0 1.2.10-build.1 1.2.10 1.2.100-build.20 1.2.100 1.3.0-build.1 1.3.0-build.2" -c "~1.2"
the output would be

1.2.0
1.2.10
1.2.100

[voor]

Yes, you got it.

[joaopapereira]

Looks like an interesting addition.

For implementation sake, we will have to change the library https://github.com/k14s/semver in order to have support for the ~ operator