Some fixes in mark_animations and span command (#355)

Co-authored-by: StraToN <StraToN@users.noreply.github.com>

docs/api/ESCLogger.md

@@ -13,7 +13,7 @@ Logging framework for Escoria
 ### LOG\_DEBUG
 
 ```gdscript
-const LOG_DEBUG: int = 3
+const LOG_WARNING: int = 1
 ```
 
 Valid log levels
@@ -21,7 +21,7 @@ Valid log levels
 ### LOG\_ERROR
 
 ```gdscript
-const LOG_DEBUG: int = 3
+const LOG_WARNING: int = 1
 ```
 
 Valid log levels
@@ -29,7 +29,7 @@ Valid log levels
 ### LOG\_INFO
 
 ```gdscript
-const LOG_DEBUG: int = 3
+const LOG_WARNING: int = 1
 ```
 
 Valid log levels
@@ -37,7 +37,7 @@ Valid log levels
 ### LOG\_WARNING
 
 ```gdscript
-const LOG_DEBUG: int = 3
+const LOG_WARNING: int = 1
 ```
 
 Valid log levels

docs/api/SpawnCommand.md

@@ -0,0 +1,40 @@
+<!-- Auto-generated from JSON by GDScript docs maker. Do not edit this document directly. -->
+
+# SpawnCommand
+
+**Extends:** [ESCBaseCommand](../ESCBaseCommand) < [Node](../Node)
+
+## Description
+
+`spawn path [object2]`
+
+Instances a scene determined by "path", and places in the position of
+object2 (object2 is optional)
+
+@ESC
+
+## Method Descriptions
+
+### configure
+
+```gdscript
+func configure() -> ESCCommandArgumentDescriptor
+```
+
+Return the descriptor of the arguments of this command
+
+### validate
+
+```gdscript
+func validate(arguments: Array)
+```
+
+Validate wether the given arguments match the command descriptor
+
+### run
+
+```gdscript
+func run(command_params: Array) -> int
+```
+
+Run the command

docs/esc.md

@@ -325,6 +325,10 @@ Moves object1 towards the position of object2, at the speed determined by
 object1's "speed" property, unless overridden. This command is non-blocking.
 It does not respect the room's navigation polygons, so you can move items
 where the player can't walk.
+#### <a name="SpawnCommand.md"></a>`spawn path [object2]` [API-Doc](api/SpawnCommand.md)
+
+Instances a scene determined by "path", and places in the position of
+object2 (object2 is optional)
 #### <a name="StopCommand.md"></a>`stop` [API-Doc](api/StopCommand.md)
 
 Stops the event's execution.