Increment version number to 0.3.5

Author: jsjuni

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: massProps
 Title: Calculate Mass Properties and Uncertainties of Tree Structures
-Version: 0.3.4.9000
+Version: 0.3.5
 Authors@R: 
     person(given=c("James", "Steven"), family="Jenkins",
       email = "sjenkins@studioj.us",

NEWS.md

@@ -1,4 +1,4 @@
-# massProps (development version)
+# massProps 0.3.5
 
 * Updated to use rollupTree::df_{get,set}_by_id() (#66)