Initial project import

tools/v/vlib/semver/README.md

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+## Description
+
+`semver` is a library for processing versions, that use the [semver][semver] format.
+
+## Examples
+
+```v
+import semver
+
+fn main() {
+	ver1 := semver.from('1.2.4') or {
+		println('Invalid version')
+		return
+	}
+	ver2 := semver.from('2.3.4') or {
+		println('Invalid version')
+		return
+	}
+	println(ver1 > ver2)
+	println(ver2 > ver1)
+	println(ver1.satisfies('>=1.1.0 <2.0.0'))
+	println(ver2.satisfies('>=1.1.0 <2.0.0'))
+	println(ver2.satisfies('>=1.1.0 <2.0.0 || >2.2.0'))
+}
+```
+
+```
+false
+true
+true
+false
+true
+```
+
+For more details see `semver.v` file.
+
+[semver]: https://semver.org/