Add api 4 pulse mapping and refactor some bits

daqbuffer/Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 name = "daqbuffer"
-version = "4.0.0-a.dev.12"
+version = "4.1.0"
 authors = ["Dominik Werder <dominik.werder@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 tokio = { version = "=1.14.77", features = ["rt-multi-thread", "io-util", "net", "time", "sync", "fs"] }