feat: re-format copyright message and auto increase copyright end year based on the current year

[Anthonyive]

Simple explanation:

copyright: GitHub User
copyright_start_date: 2017
copyright_end_date: 2020
copyright_auto_increase: false 
# if set to true, the copyright end date will be overwritten and auto increased

[jeffreytse]

Hi @Anthonyive

Firstly, thanks for the PR on auto updating the copyright period. For the year of copyright, I don't recommend to use a third-party gem, could you refactor it and implement it by the placeholder parameter?

For example:

copyright: "(c)copyright 2017-{currentYear}"

Thanks and regards

[jeffreytse]

The implement of auto increasing copyright period on the current year should be better simplified.

[Anthonyive]

@jeffreytse I will remove that gem. That gem was not used for the code. It was just for the local server to work properly since I was using ruby 3.0

[Anthonyive]

Thanks for the suggestions! I will look into them.

[Anthonyive]

New implementation based on copyright.gov:

Write _config.yml like this:

copyright: "Unpublished Work (cleft) 2017-{currentYear} {author}"

• {currentYear} will be replaced with current year
• {author} will be replaced with site.author
• copyright symbol
  • copyright: © - (c)
  • copyleft: (cleft)
  • sound recording copyright: ℗ - (p)

[jeffreytse]

Thanks for the work, and this implement has almost reached the goal.