Redirects with regular expressions
Basic intro to regex rewrite and redirect: https://www.searchenginepeople.com/blog/htaccess-redirect-rewrite-rules…
https://superuser.com/questions/155139/htaccess-301-redirect-with-regul…
https://wordpress.stackexchange.com/questions/204182/htaccess-and-redir…
https://webmasters.stackexchange.com/questions/37953/htaccess-301-redir…
https://stackoverflow.com/questions/16665672/using-regular-expression-i…