Add add method

Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "mettrics"
-version = "0.0.2"
+version = "0.0.3"
 description = "Makes publishing meaningful metrics from applications easier."
 authors = ["Dominik Werder <dominik.werder@gmail.com>"]
 license = "GPL-3.0-only"
 edition = "2024"
 
 [dependencies]
-mettrics-macros = { version = "0.0.1", path = "../mettrics-macros" }
+mettrics-macros = { version = "0.0.3", path = "../mettrics-macros" }

src/types.rs

@@ -14,6 +14,11 @@ impl CounterU32 {
         self.v += 1
     }
 
+    #[inline(always)]
+    pub fn add(&mut self, v: u32) {
+        self.v += v
+    }
+
     #[inline(always)]
     pub fn ingest(&mut self, rhs: Self) {
         self.v += rhs.v