add line_sep to add_header_above
diff --git a/NAMESPACE b/NAMESPACE
index 2894e97..8c5dcea 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -37,6 +37,7 @@
 export(usepackage_latex)
 export(xtable2kable)
 import(htmltools)
+importFrom(glue,glue)
 importFrom(grDevices,col2rgb)
 importFrom(knitr,asis_output)
 importFrom(knitr,include_graphics)