Merge pull request #101 from iamed2/patch-2

Fix @compat_gc_preserve on 0.7

Author: Keno

src/wizard/obtain_source.jl

@@ -38,7 +38,7 @@ end
 
 macro compat_gc_preserve(args...)
     if VERSION >= v"0.7-"
-        esc(Expr(:macrocall, Symbol("@gc_preserve"), args...))
+        esc(Expr(:macrocall, Expr(:., :Base, QuoteNode(Symbol("@gc_preserve"))), args...))
     else
         esc(args[end])
     end