Issue #872: add json/allocator.h in the amalgamated header.
I don't know why we didn't include this before.
It seems to work fine.
diff --git a/amalgamate.py b/amalgamate.py
index f4bff4d..c12215a 100644
--- a/amalgamate.py
+++ b/amalgamate.py
@@ -67,7 +67,7 @@
header.add_text("/// to prevent private header inclusion.")
header.add_text("#define JSON_IS_AMALGAMATION")
header.add_file("include/json/version.h")
- #header.add_file("include/json/allocator.h") # Not available here.
+ header.add_file("include/json/allocator.h")
header.add_file("include/json/config.h")
header.add_file("include/json/forwards.h")
header.add_file("include/json/features.h")