docs: bump version and export breaks_ppm

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: MsCoreUtils
 Title: Core Utils for Mass Spectrometry Data
-Version: 1.15.2
+Version: 1.15.3
 Description: MsCoreUtils defines low-level functions for mass
     spectrometry data and is independent of any high-level data
     structures. These functions include mass spectra processing
@@ -76,4 +76,4 @@ BugReports: https://github.com/RforMassSpectrometry/MsCoreUtils/issues
 URL: https://github.com/RforMassSpectrometry/MsCoreUtils
 biocViews: Infrastructure, Proteomics, MassSpectrometry, Metabolomics
 Roxygen: list(markdown=TRUE)
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1

NAMESPACE

@@ -6,6 +6,7 @@ export(aggregate_by_vector)
 export(asInteger)
 export(between)
 export(bin)
+export(breaks_ppm)
 export(closest)
 export(coefMA)
 export(coefSG)

NEWS.md

@@ -1,8 +1,13 @@
 # MsCoreUtils 1.15
 
+## MsCoreUtils 1.15.3
+
+- Add function `breaks_ppm` to create a sequence of numbers with increasing
+  difference between elements (defined by parameter `ppm`).
+
 ## MsCoreUtils 1.15.2
 
-- Porting baseline baseline estimation function (see [issue
+- Porting baseline estimation function (see [issue
   119](https://github.com/rformassspectrometry/MsCoreUtils/issues/119)).
 
 ## MsCoreUtils 1.15.1

R/binning.R

@@ -135,6 +135,8 @@ bin <- function(x, y, size = 1,
 #' @return `numeric` with the sequence of values with increasing differences.
 #'     The returned values include `from` and `to`.
 #'
+#' @export
+#'
 #' @author Johannes Rainer
 #'
 #' @examples