date bump, getting ready for CRAN release

Author: dylanbeaudette

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: aqp
 Version: 1.31
-Date: 2021-08-12
+Date: 2021-08-19
 Title: Algorithms for Quantitative Pedology
 Authors@R: c(person(given="Dylan", family="Beaudette", role = c("aut", "cre"), email = "[email protected]"), person(given="Pierre", family="Roudier", email="[email protected]", role = c("aut", "ctb")), person(given="Andrew", family="Brown", email="[email protected]", role = c("aut", "ctb")))
 Author: Dylan Beaudette [aut, cre], Pierre Roudier [aut, ctb], Andrew Brown [aut, ctb]

NEWS.md

@@ -1,4 +1,5 @@
-# aqp 1.31 (2021-08-06)
+# aqp 1.31 (2021-08-19)
+ * CRAN release
  * bug fix in `checkHzDepthLogic()` when `byhz = TRUE`
  * new function `simulateColor()` for simulation of reasonable colors
  * new function `colorChart()` for [graphical depiction of Munsell chip frequency by group](https://ncss-tech.github.io/AQP/aqp/investigating-soil-color.html#Color_Book_Style_Presentation)