Increment version number

Author: egpivo

Diff for: NEWS.md

@@ -1,3 +1,13 @@
+## SpatPCA v1.3.4 (Release date: 2023-11-11)
+#### Overview 
+This release focuses on refining the package to comply with CRAN's regulatory standards.
+
+#### MAINTENANCE
+- Achieve code coverage exceeding 100%
+- Upgrade RcppParallel to version 5.1.7
+- Correct typos for improved clarity
+
+
 ## SpatPCA v1.3.3.7 (Release date: 2023-01-28)
 #### Overview 
 In this release, we focus on package maintenance.
@@ -10,7 +20,6 @@ In this release, we focus on package maintenance.
 - Fix grammar errors
 
 
-
 ## SpatPCA v1.3.3.0 (Release date: 2021-01-31)
 #### Overview 
 In this release, we take care of the perspective of software quality by refactoring code for better readability and adding unit-tests. Accordingly, we add multiple features by separating implicit functions from `spatpca`.