Resolve defects

[jcatrysse]

Defect: make plugin compatible with additional_tags
Defect: issue_recuurent throws an error on the Custom Fields page

[cryptogopher]

Thank you for the PR.

As for compatibility with the additional_tags plugin, if I understand correctly, the proposed fix is commit 9fd754a from the issue30 branch. This will not be included in the master branch for the reasons described in the discussion here: https://it.michalczyk.pro/issues/30

I will comment on other commits as soon as I have time to take a closer look at them. It would also be good if each change were sent as a separate PR.

[jcatrysse]

Thank you.
I will see whether it is possible to provide a solution that permits both patch methods, based on a configuration. This will enable users to choose between the two methods, with the current recommended method serving as the default.

[cryptogopher]

Personally, I believe it is more worthwhile to spend time working on additional_tags to use prepend+super instead of alias_method.

[jcatrysse]

Personally, I believe it is more worthwhile to spend time working on additional_tags to use prepend+super instead of alias_method.

Multiple plugin developers / vendors all use the alias method, and I believe they will not be changing anytime soon. I use the Redmineup series of plugins, and all their plugins are still on the old method.

[cryptogopher]

Still, upgrading to super is a more rational solution than downgrading to alias_method.
Redmine developer considers it

quite simpler and cleaner

https://www.redmine.org/boards/3/topics/58309?r=58800#message-58800

The additional_tags developer considers the super method

the modern, preferred way

alphanodes/additional_tags#9 (comment)

It would be worth more spending time improving stubborn dependencies that force the use of alias_method on others.