Update README.md

Author: JWock82

README.md

@@ -61,6 +61,10 @@ Here's a list of projects that use PyNite:
 * Phaenotyp (https://github.com/bewegende-Architektur/Phaenotyp) (https://youtu.be/shloSw9HjVI)
 
 # What's New?
+v0.0.77
+* Simplified P-Delta convergence checks
+* Fixed P-Delta bug introduced in v0.0.76
+  
 v0.0.76
 * Allowed tension/compression-only support springs to reactivate after being deactivated. Erroneous deflections were being reported on very flexible models that experienced a lot of movement with T/C support springs.
 * `matplotlib` is now an optional dependency. You'll only need to install it if you want to view plots for members.
@@ -109,4 +113,4 @@ v0.0.67
 v0.0.66
 * Code simplification and bug fix for merging duplicate nodes.
 * When nodes are merged, support conditions for the deleted node are now assigned to the remaining node.
-* Added a linear solver for faster analysis of simple models. If you don't need P-Delta analysis or tension/compression-only analysis this solver saves time by only assembling the global stiffness matrix once.
+* Added a linear solver for faster analysis of simple models. If you don't need P-Delta analysis or tension/compression-only analysis this solver saves time by only assembling the global stiffness matrix once.