add new themes to index

docsrc/themes/index.nim

@@ -40,6 +40,9 @@ Here is an index of all the available themes in nimitheme:
   - [Dark Orange](basic/dark_orange.html)
   - [Light Aquamarine](basic/light_aquamarine.html)
   - [Light Classic](basic/light_classic.html)
+- [**Classless**](classless/)
+  - [Full](classless/full.html)
+  - [Tiny](classless/tiny.html)
 - [**Github Markdown**](github_markdown/)
   - [Dark](github_markdown/dark.html)
   - [Light](github_markdown/light.html)
@@ -73,6 +76,7 @@ Here is an index of all the available themes in nimitheme:
 - [Bahunya](bahunya.html)
 - [Bare](bare.html)
 - [Bonsai](bonsai.html)
+- [Comet](comet.html)
 - [Downstyler](downstyler.html)
 - [Holiday](holiday.html)
 - [Latex](latex.html)
@@ -82,6 +86,7 @@ Here is an index of all the available themes in nimitheme:
 - [New](new.html)
 - [Nimibujo](nimibujo.html)
 - [No Class](no_class.html)
+- [Paper](paper.html)
 - [Simple](simple.html)
 - [Style](style.html)
 - [Tacit](tacit.html)