diff --git a/CHANGELOG.md b/CHANGELOG.md
index 15bfad4..3fab754 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,5 @@
-0.2.3 (unreleased)
-=================
+0.3.0 (2019-09-13)
+==================
 
 * Incompatible Change: Removed :wref and :ref definition labels in favor of
 proper $&&, $& and $\* reference handling. Added `wl:weaken` and `wl:set_ref` and
diff --git a/Cargo.toml b/Cargo.toml
index f6ff72b..76292ad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name         = "wlambda"
-version      = "0.2.2"
+version      = "0.3.0"
 authors      = ["Weird Constructor <weirdconstructor@gmail.com>"]
 license      = "GPL-3.0-or-later"
 edition      = "2018"
diff --git a/examples/random_syntax_stuff.wl b/examples/random_syntax_stuff.wl
index df917ed..6a3f494 100644
--- a/examples/random_syntax_stuff.wl
+++ b/examples/random_syntax_stuff.wl
@@ -23,12 +23,12 @@ $q" fefei fwof w
 
 "
 
-feoofw@fe(fei)
+feoofw@fe[fei]
 _d
 
 :foo :ba@fo_-
 :"fo @ [] \xFFAA { \u39f9e \t \r \n \" \0 \x00 } fe"
-$e foobar [ 120 3 ]
+$e foobar ( 120 3 )
 panic "foobar" $t $true 3023 403.439 -32 +32 $n $nul
 $b"feofeo"
 while foo
diff --git a/src/prelude.rs b/src/prelude.rs
index 032764c..1730f48 100644
--- a/src/prelude.rs
+++ b/src/prelude.rs
@@ -1092,9 +1092,9 @@ pub fn create_wlamba_prelude() -> GlobalEnvRef {
             Ok(VVal::new_byt(
                 s.chars()
                  .map(|c|
-                     match c { '0'..='9' => ( 9 - (('9' as u8) - (c as u8))) as i16,
-                               'a'..='f' => (15 - (('f' as u8) - (c as u8))) as i16,
-                               'A'..='F' => (15 - (('F' as u8) - (c as u8))) as i16,
+                     match c { '0'..='9' => ( 9 - (b'9' - (c as u8))) as i16,
+                               'a'..='f' => (15 - (b'f' - (c as u8))) as i16,
+                               'A'..='F' => (15 - (b'F' - (c as u8))) as i16,
                                _ => -1 })
                  .fold((256, out), |(last, mut out), c: i16|
                      if c == -1 { (last, out) }
diff --git a/src/threads.rs b/src/threads.rs
index fdaf263..130e32b 100644
--- a/src/threads.rs
+++ b/src/threads.rs
@@ -248,10 +248,13 @@ enum RecvState {
     Return,
 }
 
+type RecvData = (RecvState, String, Vec<u8>, bool, VecDeque<(String, Vec<u8>)>);
+type RecvMutex = Mutex<RecvData>;
+
 #[derive(Debug)]
 #[cfg(feature="rmp-serde")]
 pub struct Receiver {
-    mx: Mutex<(RecvState, String, Vec<u8>, bool, VecDeque<(String, Vec<u8>)>)>,
+    mx: RecvMutex,
     cv: Condvar,
 }
 
@@ -271,7 +274,7 @@ impl Receiver {
 }
 
 #[cfg(feature="rmp-serde")]
-fn mx_recv_error(mx: &mut (RecvState, String, Vec<u8>, bool, VecDeque<(String, Vec<u8>)>), s: &str) {
+fn mx_recv_error(mx: &mut RecvData, s: &str) {
     mx.0 = RecvState::Return;
     mx.2 =
         VVal::err_msg(&format!("return value serialization error: {}", s))
@@ -281,7 +284,7 @@ fn mx_recv_error(mx: &mut (RecvState, String, Vec<u8>, bool, VecDeque<(String, V
 }
 
 #[cfg(feature="rmp-serde")]
-fn mx_return(mx: &mut (RecvState, String, Vec<u8>, bool, VecDeque<(String, Vec<u8>)>), v: &VVal) {
+fn mx_return(mx: &mut RecvData, v: &VVal) {
     mx.0 = RecvState::Return;
     match v.to_msgpack() {
         Ok(s) => {
@@ -394,7 +397,7 @@ impl MsgHandle {
                     std::mem::drop(mx);
                     loop {
                         let mut mx = r.mx.lock().unwrap();
-                        if mx.4.len() <= 0 {
+                        if mx.4.is_empty() {
                             mx.0 = RecvState::Open;
                             break;
                         }
@@ -429,6 +432,12 @@ impl MsgHandle {
     }
 }
 
+impl Default for MsgHandle {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 #[cfg(test)]
 mod tests {
     #[cfg(feature="rmp-serde")]
diff --git a/src/vval.rs b/src/vval.rs
index 67279e2..dc12951 100644
--- a/src/vval.rs
+++ b/src/vval.rs
@@ -503,6 +503,7 @@ impl VValFun {
 /// assert_eq!(
 ///     r.s(), "$[98,$<MyType((14, 84))>]", "Userdata implementation works");
 ///```
+#[allow(clippy::borrowed_box)]
 pub trait VValUserData {
     /// This method should return a human readable syntax representation
     /// of your VValUserData.
@@ -961,7 +962,7 @@ impl VVal {
             VVal::Byt(s)  => { if let VVal::Byt(s2) = v { s.borrow()[..] == s2.borrow()[..] } else { false } },
             VVal::Usr(u)  => {
                 if let VVal::Usr(u2) = v {
-                    u.eqv(u2)
+                    u.eqv(&u2)
                 } else {
                     false
                 }
@@ -1129,6 +1130,8 @@ impl VVal {
         self
     }
 
+    pub fn is_empty(&self) -> bool { self.len() == 0 }
+
     pub fn len(&self) -> usize {
         match self {
             VVal::Lst(l) => l.borrow().len(),