diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9722aae..9e847e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,50 @@
 # Changelog
 
-## 0.1.0 (2020-01-18)
+## v0.2.2 (2020-02-21)
 
-Initial public release.
+* Add type init through Type.Invoke() method
+* Remove GoFunc in favor of Fn
+
+## v0.2.1 (2020-02-19)
+
+* Add slang tests using lisp files (#8)
+* Added tests for function definitions
+* Improve function call reflection logic to handle error returns
+
+## v0.2.0 (2020-02-18)
+
+* Add evaluation error with positional info
+* Add position info to Set, List, Vector, Symbol
+* Add slang runtime package, add generic repl package
+* Add support for variadic functions
+
+## v0.1.3 (2020-02-04)
+
+* Add Values type and Seq types
+* Add let and throw special forms
+* Add support for multi-arity functions
+* Convert List, Set, Vector, Symbol types to struct
+* Modify List, Set, Vector types to embed Values type
+* Move special form functions into sabre root package
+* Add parent method to scope and modify def to apply at root scope
+
+## v0.1.2 (2020-01-23)
+
+* Add working clojure style quote system
+* Move SpecialFn to sabre root package as GoFunc
+* remove redundant strictFn type
+
+## v0.1.1 (2020-01-20)
+
+* Add error function and type functions
+* Add experimental Set implementation
+* Add special Nil type, add not & do core functions
+* Add type check and type init functions for all types
+* Add unit tests for all string and eval methods
+* Fix nested lambda binding issue
+* Split builtin functions into core package
+
+## v0.1.0 (2020-01-18)
 
 * Fully working LISP reader.
 * Working Evaluation logic with no automatic type conversion.
diff --git a/repl/repl.go b/repl/repl.go
index 54963b1..79d6da7 100644
--- a/repl/repl.go
+++ b/repl/repl.go
@@ -1,3 +1,5 @@
+// Package repl provides a REPL implementation and options to expose Sabre
+// features through a read-eval-print-loop.
 package repl
 
 import (
diff --git a/sabre.go b/sabre.go
index 6692274..1001034 100644
--- a/sabre.go
+++ b/sabre.go
@@ -1,3 +1,5 @@
+// Package sabre provides data structures, reader for reading LISP source
+// into data structures and functions for evluating forms against a context.
 package sabre
 
 import (
diff --git a/slang/core.go b/slang/core.go
index b9365b4..c5ded35 100644
--- a/slang/core.go
+++ b/slang/core.go
@@ -27,7 +27,7 @@ func Concat(s1, s2 sabre.Seq) sabre.Seq {
 	return vals
 }
 
-// Realize realizes a sequence by continuosly calling First() and Next()
+// Realize realizes a sequence by continuously calling First() and Next()
 // until the sequence becomes nil.
 func Realize(seq sabre.Seq) *sabre.List {
 	var vals []sabre.Value
diff --git a/slang/slang.go b/slang/slang.go
index 3a2ba10..6966ce8 100644
--- a/slang/slang.go
+++ b/slang/slang.go
@@ -1,3 +1,6 @@
+// Package slang (short for Sabre lang) provides a tiny LISP dialect built
+// using  factilities provided by Sabre. See New() for  initializing Slang
+// and using it.
 package slang
 
 import (
@@ -92,7 +95,7 @@ func (slang *Slang) Resolve(symbol string) (sabre.Value, error) {
 	return slang.resolveAny(symbol, *nsSym, nsSym.WithNS("core"))
 }
 
-// BindGo is similar to Bind but handles convertion of Go value 'v' to
+// BindGo is similar to Bind but handles conversion of Go value 'v' to
 // sabre Value type.
 func (slang *Slang) BindGo(symbol string, v interface{}) error {
 	return slang.Bind(symbol, sabre.ValueOf(v))