Change text

Great plugin. Two things I would like to do:

1) I want to change the pagination text “Load more job listings” to something else. I could easily change it in class-wp-job-manager-shortcodes.php, however I realise the change would get lost when updating the plugin. What’s the best way to change this?

2) Similarly I would like to change the text where it reads “Showing all … jobs” that is underneath the filters on the job listing page. Again I could easily change the text in class-wp-job-manager-ajax.php but I realise there is a smarter way.

Thanks.

https://wordpress.org/plugins/wp-job-manager/