Release tasks should commit all changed files

[mischah]

So:

bump: {
  options: {
    files: ['package.json', 'bower.json'],
    updateConfigs: ['pkg'],
    commitMessage: 'Release v%VERSION%',
    commitFiles: ['package.json', 'bower.json', 'CHANGELOG.md'],
    tagName: '%VERSION%',
    tagMessage: 'Release v%VERSION%',
    push: false,
  }
}

should be changed into:

bump: {
  options: {
    files: ['package.json', 'bower.json'],
    updateConfigs: ['pkg'],
    commitMessage: 'Release v%VERSION%',
    commitFiles: ['-a'],
    tagName: '%VERSION%',
    tagMessage: 'Release v%VERSION%',
    push: false,
  }
}

In addition it would be useful if new (and untracked) files in the dist directory are added to version control first.

[mischah]

Done in develop branch. Will be closed as soon develop gets merged in master