Merge branch 'feature/fix_no_crayon' into develop

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: multinma
 Title: Bayesian Network Meta-Analysis of Individual and Aggregate Data
-Version: 0.6.1.9000
+Version: 0.6.1.9001
 Authors@R: 
     person(given = c("David", "M."),
            family = "Phillippo",

NEWS.md

@@ -1,5 +1,8 @@
 # multinma 0.6.1.9000
 
+* Fix: Fallback formatting used by print methods when the crayon package is not 
+installed now works properly, rather than giving errors.
+
 # multinma 0.6.1
 
 * Fix: Piecewise exponential hazard models no longer give errors during set-up. 

R/nma_data-class.R

@@ -213,25 +213,25 @@ subtle <- function(...) {
   if (require_pkg("crayon", error = FALSE))
     return(crayon::silver(...))
   else
-    return(...)
+    return(paste0(...))
 }
 bold <- function(...) {
   if (require_pkg("crayon", error = FALSE))
     return(crayon::bold(...))
   else
-    return(...)
+    return(paste0(...))
 }
 red <- function(...) {
   if (require_pkg("crayon", error = FALSE))
     return(crayon::red(...))
   else
-    return(...)
+    return(paste0(...))
 }
 green <- function(...) {
   if (require_pkg("crayon", error = FALSE))
     return(crayon::green(...))
   else
-    return(...)
+    return(paste0(...))
 }
 
 #' Convert networks to graph objects