Increase package version

DESCRIPTION

 Package: stressaddition
 Type: Package
 Title: Modelling Tri-Phasic Concentration-Response Relationships
-Version: 3.0.2.9000
+Version: 3.0.2
 Date: 2020-09-04
 Authors@R: c(person("Sebastian", 
                     "Henz", 

NEWS.md

-# stressaddition (development version)
+# stressaddition 3.0.2
 
 * Fixed a bug where the plotting functions printed `NULL` to the console.
 * Changed maintainer e-mail address to ensure long-term maintainability.
@@ -6,6 +6,7 @@
 
 
 # stressaddition 3.0.1
+
 * Added missing return values in documentation to comply with CRAN repository policy.
 * Added a link to the paper in the description file.