add post calculas-formulas, update some configs

_config.next.yml

@@ -158,13 +158,13 @@ social:
   E-Mail: mailto:[email protected] || fa fa-envelope
   #Weibo: https://weibo.com/yourname || fab fa-weibo
   #Google: https://plus.google.com/yourname || fab fa-google
-  #Twitter: https://twitter.com/yourname || fab fa-twitter
+  #Twitter: https://twitter.com/josh_gao || fab fa-twitter
   #FB Page: https://www.facebook.com/yourname || fab fa-facebook
   #StackOverflow: https://stackoverflow.com/yourname || fab fa-stack-overflow
   #YouTube: https://youtube.com/yourname || fab fa-youtube
   #Instagram: https://instagram.com/yourname || fab fa-instagram
   #Skype: skype:yourname?call|chat || fab fa-skype
-  CSDN: https://josh-gao.blog.csdn.net/ || fab fa-cuttlefish
+  CSDN: https://blog.csdn.net/weixin_43870101 || fab fa-cuttlefish
 
 social_icons:
   enable: true
@@ -339,7 +339,7 @@ calendar:
 
 # Preload styles and preconnect CDN for fonts and plugins.
 # For more information: https://www.w3.org/TR/resource-hints/#preconnect
-preconnect: false
+preconnect: true
 
 # Set the text alignment in posts / pages.
 text_align:
@@ -386,7 +386,7 @@ back2top:
 
 # Reading progress bar
 reading_progress:
-  enable: false
+  enable: true
   # Available values: left | right
   start_at: left
   # Available values: top | bottom
@@ -397,7 +397,7 @@ reading_progress:
 
 # Bookmark Support
 bookmark:
-  enable: true
+  enable: false
   # Customize the color of the bookmark.
   color: "#222"
   # If auto, save the reading progress when closing the page or clicking the bookmark-icon.