♻️💄 simplify KorAPConnection class instantiations to modern syntax

Update all class instantiations from `new("KorAPConnection")` to `KorAPConnection()`.
This is possible with R >= 4.0.

Change-Id: I01131fb32045e084cafbb9e05cd8ba99f8f20f1b
diff --git a/demo/light-verb-construction-ca.R b/demo/light-verb-construction-ca.R
index fa8093f..e902f16 100644
--- a/demo/light-verb-construction-ca.R
+++ b/demo/light-verb-construction-ca.R
@@ -9,7 +9,7 @@
 
 cat(file=mdFile, sprintf("---\ntitle: LVC analysis of %s\n---\n\n", lvLemma))
 
-new("KorAPConnection", verbose = TRUE) %>%
+KorAPConnection(verbose = TRUE) %>%
   collocationAnalysis(
     sprintf("focus(in [tt/p=NN] {[tt/l=%s]})", lvLemma),
     leftContextSize = 1,