File uploads, mostly. Also added extra behavior to addCharacter.

graph2/schema/root.gql

@@ -107,7 +107,7 @@ type Mutation {
   "Edit a comment in a chapter."
   editComment(input: CommentEditInput!): Comment!
 
-  "Remove a comemnt in a chapter."
+  "Remove a comment in a chapter."
   removeComment(input: CommentRemoveInput!): Comment!
 
 
@@ -164,6 +164,10 @@ type Mutation {
 
   # Edit a channel
   editChannel(input: ChannelEditInput!): Channel!
+
+
+  "Upload a file"
+  uploadFile(input: FileUploadInput): File!
 }
 
 type Subscription {
@@ -176,3 +180,5 @@ type Subscription {
 # A Time represents a RFC3339 encoded date with up to millisecond precision.
 scalar Time
 
+"""A GraphQL file upload."""
+scalar Upload

graph2/schema/types/Change.gql

@@ -64,6 +64,8 @@ enum ChangeModel {
   Story
   Tag
   Chapter
+  Comment
+  File
 }
 
 """

graph2/schema/types/File.gql

@@ -38,9 +38,21 @@ input FilesFilter {
   mimeTypes: [String!]
 }
 
+# Input for uploadFile mutation
+input FileUploadInput {
+  "The file name"
+  name: String!
+
+  # Whether the file should be public
+  public: Boolean!
+
+  # The actual file upload
+  file: Upload!
+}
+
 # Input for editFile mutation
 input EditFileInput {
- # The file's unique ID
+  # The file's unique ID
   id: String!
 
   # Whether the file is publicly listable. Someone with knowledge of the ID