Skip tags that are not Semantically Versioned

[pete0emerson]

This closes #75

I validated each tag, discarding any that aren't SemVer.

For testing, I suggest that a non-SemVer tag be added to the public and private test repositories github_test.go.

https://github.com/gruntwork-io/fetch/blob/4bec67f9ab28423e6b6f72b2fc9d397e5681c671/github_test.go#L25-L28

[pete0emerson]

Could you add an automated test to validate this behavior?

I've added expectedNumTags and set it to 3 for https://github.com/gruntwork-io/fetch-test-public and 1 for https://github.com/gruntwork-io/fetch-test-private (for which I don't have access, so I can't verify that 1 is correct, but I think it is since firstReleaseTag and lastReleaseTag are both set to v0.0.2).

To fully be confident this is always working, I'd suggest adding a couple of non-SemVer tags to both of those repositories; the expectedNumTags values I've set shouldn't change, but having a "bad" tag in there will then hit the code that skips those tags.

[brikis98]

I've added expectedNumTags and set it to 3 for https://github.com/gruntwork-io/fetch-test-public and 1 for https://github.com/gruntwork-io/fetch-test-private (for which I don't have access, so I can't verify that 1 is correct, but I think it is since firstReleaseTag and lastReleaseTag are both set to v0.0.2).

To fully be confident this is always working, I'd suggest adding a couple of non-SemVer tags to both of those repositories; the expectedNumTags values I've set shouldn't change, but having a "bad" tag in there will then hit the code that skips those tags.

Nice, thanks!

I added a non-semantic tag to both repos that looks like this: https://github.com/gruntwork-io/fetch-test-public/releases/tag/non-semantic

[pete0emerson]

Done, and my local tests are passing until I hit the private repos.

[brikis98]

Tests passed! Merging now.

[brikis98]

https://github.com/gruntwork-io/fetch/releases/tag/v0.3.11