feat: allows to use semver strictly on versions less than 1.0.0

[mimarec]

This PR allows to follow the convention established by SEMVER for the version increment regardless of whether it is a stable version or not (equal or higher than 1.0.0).

In order to follow this convention the strict-semver property is added to the initial configuration.

const defaults = {
  infile: 'CHANGELOG.md',
  firstRelease: false,
  sign: false,
  noVerify: false,
  commitAll: false,
  silent: false,
  tagPrefix: 'v',
  scripts: {},
  skip: {},
  dryRun: false,
  strictSemver: false,
  gitTagFallback: true,
  preset: require.resolve('conventional-changelog-conventionalcommits')
}

By default this property will have value false to maintain the current behavior which is described in this section #347 #308 #310

The value of strict-semver is evaluated in the bump.js file to determine whether to strictly follow semver or to apply the current behavior.

if (typeof presetOptions === 'object') {
    if (semver.lt(currentVersion, '1.0.0') && !args.strictSemver) presetOptions.preMajor = true
}

You can set this property as follows:

1. Set the strict-semver property to standard-version stanza in your package.json(assuming your project is JavaScript).
2. Place the strict-semver property in a .versionrc, .versionrc.json or .versionrc.js.