Add missing require statements

src/spectator/command_line_arguments_config_source.cr

@@ -1,4 +1,5 @@
 require "option_parser"
+require "./config_source"
 
 module Spectator
   # Generates configuration from the command-line arguments.

src/spectator/composite_example_filter.cr

@@ -1,3 +1,5 @@
+require "./example_filter"
+
 module Spectator
   # Filter that combines multiple other filters.
   class CompositeExampleFilter < ExampleFilter

src/spectator/config.cr

@@ -1,3 +1,6 @@
+require "./example_filter"
+require "./formatting"
+
 module Spectator
   # Provides customization and describes specifics for how Spectator will run and report tests.
   class Config

src/spectator/failed_result.cr

@@ -1,4 +1,4 @@
-require "./result"
+require "./finished_result"
 
 module Spectator
   # Outcome that indicates running an example was a failure.

src/spectator/finished_result.cr

@@ -1,3 +1,5 @@
+require "./result"
+
 module Spectator
   # Abstract class for all results by examples
   abstract class FinishedResult < Result

src/spectator/formatting/document_formatter.cr

@@ -1,3 +1,4 @@
+require "../example_group"
 require "./formatter"
 require "./suite_summary"