[FR] Dynamic Title Insertion

[zadro]

I'm not sure if this feature already exists or has been asked previously, but having the ability for dynamic title insertion "per entry" would go a long way for SEO purposes. I understand dynamic titles can be done in global settings.

For example, allowing Twig functionality in the SEO title, such as {{ 'now' | date('Y') }} would be a highly beneficial feature.

Alternatively, having a set of variables to accomplish this, such as %%currentYear%%, would also be great. There is probably a need for other variables, such as siteTitle -- again, this is a feature request at the "entry level" not in global settings.

Thanks for your consideration, and please let me know if this feature already exists.