Hi all users of this plugin "WP Single Post Navigation"!
With version 1.4 of the plugin I added the following changes - most requested by you, the users:
Finally, since version 1.4 you can reverse the link direction via defining a little constant in your theme or child theme. Please see the FAQ section here for more info on that: http://wordpress.org/extend/plugins/wp-single-post-navigation/faq/
Also since version 1.4 you can customize the possible parameters of the previous/next post links - these are the same parameters the WordPress functions offer :-). Again, please see FAQ section here for more info on that: http://wordpress.org/extend/plugins/wp-single-post-navigation/faq/
I hope you like the changes!
Thanx for using or trying out my plugin!