fix: Pass options by reference

Pantograph/Environment.lean

@@ -37,7 +37,7 @@ def catalog (_: Protocol.EnvCatalog): CoreM Protocol.EnvCatalogResult := do
     | .some x => acc.push x
     | .none => acc)
   return { symbols := names }
-def inspect (args: Protocol.EnvInspect) (options: Protocol.Options): CoreM (Protocol.CR Protocol.EnvInspectResult) := do
+def inspect (args: Protocol.EnvInspect) (options: @&Protocol.Options): CoreM (Protocol.CR Protocol.EnvInspectResult) := do
   let env ← Lean.MonadEnv.getEnv
   let name :=  args.name.toName
   let info? := env.find? name

Pantograph/Library.lean

@@ -98,7 +98,7 @@ def mkOptions
   }
 
 @[export pantograph_env_inspect_m]
-def envInspect (name: String) (value: Bool) (dependency: Bool) (options: Protocol.Options):
+def envInspect (name: String) (value: Bool) (dependency: Bool) (options: @&Protocol.Options):
     Lean.CoreM (Protocol.CR Protocol.EnvInspectResult) :=
   Environment.inspect ({
     name, value? := .some value, dependency?:= .some dependency
@@ -162,7 +162,7 @@ def goalResume (target: GoalState) (goals: Array String): Except String GoalStat
   target.resume (goals.map (λ n => { name := n.toName }) |>.toList)
 
 @[export pantograph_goal_serialize_m]
-def goalSerialize (state: GoalState) (options: Protocol.Options): Lean.CoreM (Array Protocol.Goal) :=
+def goalSerialize (state: GoalState) (options: @&Protocol.Options): Lean.CoreM (Array Protocol.Goal) :=
   runMetaM <| state.serializeGoals (parent := .none) options
 
 

Pantograph/Serial.lean

@@ -172,7 +172,7 @@ def serialize_expression (options: @&Protocol.Options) (e: Expr): MetaM Protocol
   }
 
 /-- Adapted from ppGoal -/
-def serialize_goal (options: Protocol.Options) (goal: MVarId) (mvarDecl: MetavarDecl) (parentDecl?: Option MetavarDecl)
+def serialize_goal (options: @&Protocol.Options) (goal: MVarId) (mvarDecl: MetavarDecl) (parentDecl?: Option MetavarDecl)
       : MetaM Protocol.Goal := do
   -- Options for printing; See Meta.ppGoal for details
   let showLetValues  := true
@@ -242,7 +242,11 @@ def serialize_goal (options: Protocol.Options) (goal: MVarId) (mvarDecl: Metavar
   where
   of_name (n: Name) := name_to_ast n (sanitize := false)
 
-protected def GoalState.serializeGoals (state: GoalState) (parent: Option GoalState := .none) (options: Protocol.Options := {}): MetaM (Array Protocol.Goal):= do
+protected def GoalState.serializeGoals
+      (state: GoalState)
+      (parent: Option GoalState := .none)
+      (options: @&Protocol.Options := {}):
+    MetaM (Array Protocol.Goal):= do
   state.restoreMetaM
   let goals := state.goals.toArray
   let parentDecl? := parent.bind (λ parentState =>