Update to Yard >= 0.9.0

* Return a string from CodeObjects::HeaderObject#path

  A change in YARD::Serializers::FileSystemSerializer stopped
  calling `#to_s` on the the CodeObject passed, causing a NoMethodError
  for "+" missing Symbol (#path was just an alias to #name).

  Added minimal specs to cover only this case.

* Fixed some handler specs dealing with namespaces.

  A bug in the Yard c handler allowed namespacing to be determined
  without a proper parent RClass. See lsegal/yard#912

* There were some breaking changes to templates.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/yard/mruby/code_objects/header_object.rb b/lib/yard/mruby/code_objects/header_object.rb
index 2f9e7e4..45e1f5b 100644
--- a/lib/yard/mruby/code_objects/header_object.rb
+++ b/lib/yard/mruby/code_objects/header_object.rb
@@ -4,11 +4,11 @@ module YARD::MRuby::CodeObjects
   # It groups C Functions and define macros.
   class HeaderObject < YARD::CodeObjects::NamespaceObject
     def functions
-      children.find_all {|d| d.is_a?(FunctionObject) } 
+      children.find_all {|d| d.is_a?(FunctionObject) }
     end
 
     def defines
-      children.find_all {|d| d.is_a?(DefineObject) } 
+      children.find_all {|d| d.is_a?(DefineObject) }
     end
 
     def typedefs
@@ -16,7 +16,7 @@ module YARD::MRuby::CodeObjects
     end
 
     def path
-      self.name
+      self.name.to_s
     end
 
     def title