Add literal pattern syntax and change tree structure syntax

- Literal patterns don't interpret the special characters of regular expressions.
  In other words, 'abc|def' matches only `abc|def`, not `abc` or `def`.
- Change tree structure syntax from '(...) to #(...).

1 files changed, 1 insertions, 1 deletions

diff --git a/go.mod b/go.mod
index 3e16f7d..ef68d09 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/nihei9/vartan
 go 1.16
 
 require (
-	github.com/nihei9/maleeni v0.1.0
+	github.com/nihei9/maleeni v0.2.0
 	github.com/spf13/cobra v1.1.3
 )