Bump min Crystal version for framework, dotenv, and validator (a…

…thena-framework/athena#433)

shard.yml

@@ -2,7 +2,7 @@ name: athena
 
 version: 0.19.1
 
-crystal: ~> 1.11
+crystal: ~> 1.13
 
 license: MIT
 

src/athena.cr

@@ -225,11 +225,7 @@ module Athena::Framework
       {% end %}
 
       # Handle exiting correctly on interrupt signals
-      {% if compare_versions(Crystal::VERSION, "1.12.0") >= 0 %}
-        Process.on_terminate { self.stop }
-      {% else %}
-        Process.on_interrupt { self.stop }
-      {% end %}
+      Process.on_terminate { self.stop }
 
       Log.info { %(Server has started and is listening at #{@ssl_context ? "https" : "http"}://#{@server.addresses.first}) }
 

src/binary_file_response.cr

@@ -57,16 +57,7 @@ class Athena::Framework::BinaryFileResponse < Athena::Framework::Response
   )
     super nil, status, headers
 
-    # TODO: Inline this again once 1.13.0 is the new min version
-    {% begin %}
-      {% if compare_versions(Crystal::VERSION, "1.13.0-dev") >= 0 %}
-        is_file_readable = File::Info.readable? file_path
-      {% else %}
-        is_file_readable = File.readable? file_path
-      {% end %}
-
-      raise File::Error.new("File '#{file_path}' must be readable.", file: file_path) unless is_file_readable
-    {% end %}
+    raise File::Error.new("File '#{file_path}' must be readable.", file: file_path) unless File::Info.readable? file_path
 
     @file_path = Path.new(file_path).expand