ADD: Parsing for space+cohort structure

Author: mgxd

niworkflows/data/nipreps.json

@@ -115,11 +115,11 @@
     },
     {
       "name": "from",
-      "pattern": "(?:^|_)from-([a-zA-Z0-9]+).*xfm"
+      "pattern": "(?:^|_)from-([a-zA-Z0-9\\+]+).*xfm"
     },
     {
       "name": "to",
-      "pattern": "(?:^|_)to-([a-zA-Z0-9]+).*xfm"
+      "pattern": "(?:^|_)to-([a-zA-Z0-9\\+]+).*xfm"
     },
     {
       "name": "mode",