Increment feature

[chriskilding]

Add a feature that increments the input semantic version(s), because this is a reasonably common thing that people want to do with semantic version numbers.

The feature should be able to operate in combination with the other features, e.g. semver -s -i major.

Possible designs:

--increment <component>

One CLI option, which takes one component (major, minor, or patch) as its argument:

semver -i major
semver --increment major

semver -i minor
semver --increment minor

semver -i patch
semver --increment patch

Example:

semver -i minor <<< "1.2.3"
# => 1.3.0

--increment-major, --increment-minor, --increment-patch

Multiple CLI options:

semver -m
semver --increment-major

semver -n
semver --increment-minor

semver -p
semver --increment-patch

Example:

semver -n <<< "1.2.3"
# => 1.3.0

The fact that there are multiple options means it is also technically possible to combine them i.e. semver -mnp. We would need to work out if this is useful or even desirable:

semver -np <<< "1.2.3"
# => 1.3.1

[chriskilding]

It would also be good to consider if this feature should go in this tool, or if it should go in another dedicated incrementing tool / shell function.

If the feature goes in another tool, DEB/RPM packages would make it a lot easier to distribute semver and that tool together.