sort by functionality for blog listing pages which contains 10+ blog posts.

[deepak_techm]

filter functionality was already done by me, i want to add sort by functionality which will sort the blog post: 

Sort options

• Edited (most recent)
• Edited (least recent)
• Title (A–Z)
• Title (Z–A)
• Blog title (A–Z)
• Blog title (Z–A)
• Author (A–Z)
• Author (Z–A)