Which version of PHP Book Rich Snippet Addon plugin requires?
Book Rich Snippet Addon plugin requires one of the following PHP versions: . The plugin might work with older PHP versions, but they are no longer tested or supported.
Which version of WordPress Book Rich Snippet Addon plugin requires?
Book Rich Snippet Addon plugin requires one of the following WordPress versions: 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6. The plugin might work with older WordPress versions, but they are no longer tested or supported.
Which version of ClassicPress (WordPress fork) Book Rich Snippet Addon plugin requires?
Book Rich Snippet Addon plugin requires one of the following ClassicPress versions: 1.0, 1.1, 1.2.
How old is Book Rich Snippet Addon plugin?
Book Rich Snippet Addon plugin is 1 year, 8 months old.
When was Book Rich Snippet Addon plugin first version released?
Book Rich Snippet Addon plugin was first released on January 22, 2020.
Where can I find list of changes in all Book Rich Snippet Addon plugin releases?
The detailed changelog for Book Rich Snippet Addon plugin is available here: Book Rich Snippet Addon Changelog.
Can I translate Book Rich Snippet Addon to my language?

Yes. POT file is provided as a base for translation in the root folder for each plugin. Translation files should go into languages directory, and WordPress must be set to your language to load the file. The file name for translated and compiled MO file must be the same as POT file with the addition of language code: {addon-name}-{language-code}.mo.

You can check out this for translating plugins using POEdit program:
wp.dev4press.com/tutorials/translating-plugins-or-themes-using-poedit

Open Debugger Panel