prepare 5.5.2 release (#123)

Author: eli-darkly

.yardopts

@@ -0,0 +1,9 @@
+--no-private
+--markup markdown
+--embed-mixins
+lib/*.rb
+lib/**/*.rb
+lib/**/**/*.rb
+lib/**/**/**/*.rb
+-
+README.md

scripts/gendocs.sh

@@ -6,7 +6,6 @@
 gem install --conservative yard
 gem install --conservative redcarpet  # provides Markdown formatting
 
-# yard doesn't seem to do recursive directories, even though Ruby's Dir.glob supposedly recurses for "**"
-PATHS="lib/*.rb lib/**/*.rb lib/**/**/*.rb lib/**/**/**/*.rb"
+rm -rf doc/*
 
-yard doc --no-private --markup markdown --markup-provider redcarpet --embed-mixins $PATHS - README.md
+yard doc