bumped dependencies

Gemfile.lock

@@ -10,35 +10,39 @@ GEM
   specs:
     ast (2.4.2)
     bencode (0.8.2)
-    colorize (0.8.1)
-    json (2.6.3)
-    minitest (5.18.0)
-    parallel (1.23.0)
-    parser (3.2.2.1)
+    colorize (1.1.0)
+    json (2.7.1)
+    language_server-protocol (3.17.0.3)
+    minitest (5.22.3)
+    parallel (1.24.0)
+    parser (3.3.0.5)
       ast (~> 2.4.1)
-    psych (5.1.0)
+      racc
+    psych (5.1.2)
       stringio
+    racc (1.7.3)
     rainbow (3.1.1)
     rake (12.3.3)
-    rdoc (6.5.0)
+    rdoc (6.6.3.1)
       psych (>= 4.0.0)
-    regexp_parser (2.8.0)
-    rexml (3.2.5)
-    rubocop (1.51.0)
+    regexp_parser (2.9.0)
+    rexml (3.2.6)
+    rubocop (1.62.1)
       json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.2.0.0)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.28.0, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.28.1)
-      parser (>= 3.2.1.0)
+    rubocop-ast (1.31.2)
+      parser (>= 3.3.0.4)
     ruby-progressbar (1.13.0)
-    stringio (3.0.6)
-    unicode-display_width (2.4.2)
+    stringio (3.1.0)
+    unicode-display_width (2.5.0)
 
 PLATFORMS
   x86_64-linux
@@ -53,4 +57,4 @@ DEPENDENCIES
   rubocop
 
 BUNDLED WITH
-   2.4.13
+   2.5.7

README.md

@@ -29,7 +29,6 @@ and try the following Ruby codes yourself:
 ```ruby
 require 'alda-rb'
 
-Alda.up if Alda.down?
 puts Alda.version
 
 score = Alda::Score.new { o4; c4/e/g; -d8; r8_16; +f4; o5; c2 }