diff --git a/CHANGELOG.md b/CHANGELOG.md
index b626c89..7eaa4d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## v0.0.7
+
+[release](https://github.com/dyweb/gommon/releases/tag/0.0.7)
+
+- deprecated config v1, move it to legacy folder
+- move cast into util
+
+## v0.0.6
+
+[release](https://github.com/dyweb/gommon/releases/tag/0.0.6)
+
+- improve doc, fix typo
+
 ## v0.0.5
 
 [release](https://github.com/dyweb/gommon/releases/tag/0.0.5)
diff --git a/Makefile b/Makefile
index 3937241..810bc5c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,13 @@
-PKGS=./cast/... ./config/... ./errors/... ./generator/... ./log/... ./noodle/... ./requests/... ./structure/... ./util/...
-PKGST=./cast ./cmd ./config ./errors ./generator ./log ./noodle ./requests ./structure ./util
-VERSION = 0.0.1
+PKGS=./errors/... ./generator/... ./log/... ./noodle/... ./requests/... ./structure/... ./util/...
+PKGST=./cmd ./errors ./generator ./log ./noodle ./requests ./structure ./util
+VERSION = 0.0.7
 BUILD_COMMIT = $(shell git rev-parse HEAD)
 BUILD_TIME = $(shell date +%Y-%m-%dT%H:%M:%S%z)
 CURRENT_USER = $(USER)
 FLAGS = -X main.version=$(VERSION) -X main.commit=$(BUILD_COMMIT) -X main.buildTime=$(BUILD_TIME) -X main.buildUser=$(CURRENT_USER)
 
+# TODO: define help messages
+
 .PHONY: install
 install:
 	go install -ldflags "$(FLAGS)" ./cmd/gommon
@@ -52,7 +54,7 @@ update-dep:
 #--- docker ---#
 .PHONY: docker-test
 docker-test:
-	docker-compose -f scripts/docker-compose.yml run --rm golang1.9
+	docker-compose -f scripts/docker-compose.yml run --rm golang1.10
 	docker-compose -f scripts/docker-compose.yml run --rm golanglatest
 
 .PHONY: docker-remove-all-containers
diff --git a/README.md b/README.md
index 3db554a..a2e2981 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,6 @@ Gommon is a collection of common util libraries written in Go.
 
 It has the following components:
 
-- [config](config) A YAML config reader with template support
 - [errors](errors) Typed error with context, multi error
 - [generator](generator) Render go template, generate methods for logger interface based on `gommon.yml`
 - [log](log) A Javaish logger for Go, application can set level for their dependencies based on package, struct 
@@ -24,6 +23,7 @@ It has the following components:
 
 Legacy
 
+- [config v1](config) A YAML config reader with template support
 - [log v1](legacy/log) A logrus like structured logger
 - [Runner](legacy/runner) A os/exec wrapper
 
@@ -49,38 +49,6 @@ Removed
 - `dep ensure`
 - `make test`
 
-### Roadmap
-
-0.0.7
-
-- [x] test coverage for multiple packages
-- [ ] explain internals of some implementation
-- [ ] start documenting the style for writing gommon itself, lib using gommon, app using gommon/lib using gommon
-- [ ] improve Makefile and dockerized build & test
-
-0.0.8
-
-- [ ] more complex error interface, error code
-- [ ] organized error types
-- [ ] extension for collecting errors using third party services
-- [ ] init go mod support, not sure if it will be compatible with dep 
-
-0.0.9
-
-- [ ] tree of loggers in use
-- [ ] benchmark against other loggers
-- [ ] support better logging for errors
-
-0.0.10
-
-- [ ] simplify config package, no more template and get value by string path
-- [ ] move cast into util
-
-0.0.11
-
-- [ ] httputil package, merge part of current requests package unix domain sock etc.
-- [ ] requests, download and upload file, a curl like example
-
 ## License
 
 MIT
diff --git a/ROADMAP.md b/ROADMAP.md
new file mode 100644
index 0000000..0d0981f
--- /dev/null
+++ b/ROADMAP.md
@@ -0,0 +1,26 @@
+# Roadmap
+
+## 0.0.8
+
+- [x] test coverage for multiple packages
+- [ ] explain internals of some implementation
+- [ ] start documenting the style for writing gommon itself, lib using gommon, app using gommon/lib using gommon
+- [ ] improve Makefile and dockerized build & test
+
+## 0.0.9
+
+- [ ] more complex error interface, error code
+- [ ] organized error types
+- [ ] extension for collecting errors using third party services
+- [ ] init go mod support, not sure if it will be compatible with dep 
+
+## 0.0.10
+
+- [ ] tree of loggers in use
+- [ ] benchmark against other loggers
+- [ ] support better logging for errors
+
+## 0.0.11
+
+- [ ] httputil package, merge part of current requests package unix domain sock etc.
+- [ ] requests, download and upload file, a curl like example
\ No newline at end of file
diff --git a/directory.md b/directory.md
new file mode 100644
index 0000000..72f9eaa
--- /dev/null
+++ b/directory.md
@@ -0,0 +1,21 @@
+# Directory
+
+## Project Layout
+
+- [cmd/gommon](cmd/gommon) the command line application
+- [doc](doc) documentation
+- [errors](errors) error wrapping and multi error
+- [generator](generator) generating interface methods, render go template, protobuf etc.
+- [legacy](legacy) legacy code base
+- [noodle](noodle) embed static assets for go binary with .ignore file support
+- [playground](playground) test library and replay issues
+- [requests](requests) ~~http util~~
+- [scripts](scripts) test scripts
+- [structure](structure) data structure
+- [util](util) small packages
+
+## Package Layout
+
+- README.md 
+- doc
+  - history.md verbose log about the evolve of the package, important decision made and the reason behind it
\ No newline at end of file
diff --git a/doc/README.md b/doc/README.md
index f66c06d..a11d6bd 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -1,2 +1,7 @@
 # Gommon Documentation
 
+- Style
+  - [General](style.md)
+  - [Application using Gommon](style-application.md)
+  - [Library using Gommon](style-library.md)
+  - [Writing Gommon](style-gommon.md)
diff --git a/doc/directory.md b/doc/directory.md
deleted file mode 100644
index 33dc528..0000000
--- a/doc/directory.md
+++ /dev/null
@@ -1,15 +0,0 @@
-# Directory
-
-- [cmd/gommon](../cmd/gommon) the command line application
-- [cast](../cast) converter needed for config
-- [config](../config) config file reader
-- [doc](.) documentation
-- [errors](../errors) error wrapping and multi error
-- [generator](../generator) generating interface methods, render go template, protobuf etc.
-- [legacy](../legacy) legacy code base
-- [noodle](../noodle) embed static assets for go binary with .ignore file support
-- [playground](../playground) test library and replay issues
-- [requests](../requests) http util
-- [scripts](../scripts) test scripts
-- [structure](../structure) data structure
-- [util](../util) util packages for public use, they are too small to be top level package
\ No newline at end of file
diff --git a/doc/style-gommon.md b/doc/style-gommon.md
new file mode 100644
index 0000000..e312cbc
--- /dev/null
+++ b/doc/style-gommon.md
@@ -0,0 +1,18 @@
+# Gommon Style
+
+Style for writing gommon itself, see [library](style-library.md) and [application](style-application.md) for using gommon.
+
+## Folder structure
+
+see [directory](../directory.md)
+
+- [ ] TODO: add how to structure file inside a package etc.
+
+## Documentation
+
+MUST cover the following
+
+- [ ] convention, i.e. variable names, error handling etc.
+- [ ] internal, a basic walk through of import parts
+- define canonical import path in `pkg.go` https://golang.org/doc/go1.4#canonicalimports 
+- [ ] survey
diff --git a/doc/style.md b/doc/style.md
index 69856ee..5b21074 100644
--- a/doc/style.md
+++ b/doc/style.md
@@ -1,20 +1,4 @@
 # Coding Style
 
-Style for writing gommon itself, see [library](style-library.md) and [application](style-application.md) for using gommon.
-
-## Folder structure
-
-see [directory](directory.md)
-
-- [ ] TODO: add how to structure file inside a package etc.
-
-## Documentation
-
-MUST cover the following
-
-- [ ] convention, i.e. variable names, error handling etc.
-- [ ] internal, a basic walk through of import parts
-- define canonical import path in `pkg.go` https://golang.org/doc/go1.4#canonicalimports 
-- [ ] survey
-
+General coding style
 
diff --git a/generator/generate.go b/generator/generate.go
index 6e5a07f..817a4fd 100644
--- a/generator/generate.go
+++ b/generator/generate.go
@@ -4,8 +4,10 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"io/ioutil"
+
+	"gopkg.in/yaml.v2"
 
-	"github.com/dyweb/gommon/config"
 	"github.com/dyweb/gommon/errors"
 	"github.com/dyweb/gommon/util/fsutil"
 )
@@ -37,10 +39,13 @@ func GenerateSingle(file string) error {
 	segments := strings.Split(dir, string(os.PathSeparator))
 	pkg := segments[len(segments)-1]
 	cfg := NewConfig(pkg, file)
-	// TODO: config may remove LoadYAMLAsStruct in the future
-	if err = config.LoadYAMLAsStruct(file, &cfg); err != nil {
+	b, err := ioutil.ReadFile(file)
+	if err != nil {
 		return errors.Wrap(err, "can't read config file")
 	}
+	if err = yaml.Unmarshal(b, &cfg); err != nil {
+		return errors.Wrap(err, "can't decode config file as YAML")
+	}
 
 	// gommon logger
 	if rendered, err = cfg.RenderGommon(); err != nil {
diff --git a/config/README.md b/legacy/config/README.md
similarity index 100%
rename from config/README.md
rename to legacy/config/README.md
diff --git a/config/gommon.yml b/legacy/config/gommon.yml
similarity index 100%
rename from config/gommon.yml
rename to legacy/config/gommon.yml
diff --git a/config/gommon_generated.go b/legacy/config/gommon_generated.go
similarity index 100%
rename from config/gommon_generated.go
rename to legacy/config/gommon_generated.go
diff --git a/config/pkg.go b/legacy/config/pkg.go
similarity index 87%
rename from config/pkg.go
rename to legacy/config/pkg.go
index c437621..8c131db 100644
--- a/config/pkg.go
+++ b/legacy/config/pkg.go
@@ -1,5 +1,5 @@
 // Package config supports go text/template, environment and self defined variables
-package config // import "github.com/dyweb/gommon/config"
+package config
 
 import (
 	"github.com/dyweb/gommon/util/logutil"
diff --git a/config/testdata/multi_doc_multi_vars.yml b/legacy/config/testdata/multi_doc_multi_vars.yml
similarity index 100%
rename from config/testdata/multi_doc_multi_vars.yml
rename to legacy/config/testdata/multi_doc_multi_vars.yml
diff --git a/config/testdata/multi_doc_single_vars.yml b/legacy/config/testdata/multi_doc_single_vars.yml
similarity index 100%
rename from config/testdata/multi_doc_single_vars.yml
rename to legacy/config/testdata/multi_doc_single_vars.yml
diff --git a/config/testdata/single_doc_no_vars.yml b/legacy/config/testdata/single_doc_no_vars.yml
similarity index 100%
rename from config/testdata/single_doc_no_vars.yml
rename to legacy/config/testdata/single_doc_no_vars.yml
diff --git a/config/testdata/single_doc_vars.yml b/legacy/config/testdata/single_doc_vars.yml
similarity index 100%
rename from config/testdata/single_doc_vars.yml
rename to legacy/config/testdata/single_doc_vars.yml
diff --git a/config/testdata/structured.yml b/legacy/config/testdata/structured.yml
similarity index 100%
rename from config/testdata/structured.yml
rename to legacy/config/testdata/structured.yml
diff --git a/config/yaml.go b/legacy/config/yaml.go
similarity index 99%
rename from config/yaml.go
rename to legacy/config/yaml.go
index dbe1ec4..bfaca9f 100644
--- a/config/yaml.go
+++ b/legacy/config/yaml.go
@@ -12,10 +12,10 @@ import (
 
 	"gopkg.in/yaml.v2"
 
-	"github.com/dyweb/gommon/cast"
 	"github.com/dyweb/gommon/errors"
 	dlog "github.com/dyweb/gommon/log"
 	"github.com/dyweb/gommon/util"
+	"github.com/dyweb/gommon/util/cast"
 )
 
 // YAMLConfig is a thread safe struct for parse YAML file and get value
diff --git a/config/yaml_test.go b/legacy/config/yaml_test.go
similarity index 100%
rename from config/yaml_test.go
rename to legacy/config/yaml_test.go
diff --git a/requests/doc/history.md b/requests/doc/history.md
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/docker-compose.yml b/scripts/docker-compose.yml
index d23876f..4ba56ba 100644
--- a/scripts/docker-compose.yml
+++ b/scripts/docker-compose.yml
@@ -2,7 +2,7 @@ version: '2'
 services:
 # FIXME: there should be a way of reusing command, I am just copying stuff around, there is extend keyword, but removed in v3
   golang1.9:
-    image: golang:1.9
+    image: golang:1.10
     command: go test -v -cover ./cast/... ./config/... ./generator/... ./log/... ./playground/... ./requests/... ./structure/... ./util/...
     working_dir: /go/src/github.com/dyweb/gommon
     volumes:
diff --git a/cast/README.md b/util/cast/README.md
similarity index 100%
rename from cast/README.md
rename to util/cast/README.md
diff --git a/cast/cast.go b/util/cast/cast.go
similarity index 100%
rename from cast/cast.go
rename to util/cast/cast.go
diff --git a/cast/cast_test.go b/util/cast/cast_test.go
similarity index 100%
rename from cast/cast_test.go
rename to util/cast/cast_test.go
diff --git a/cast/pkg.go b/util/cast/pkg.go
similarity index 69%
rename from cast/pkg.go
rename to util/cast/pkg.go
index 5da9965..4484829 100644
--- a/cast/pkg.go
+++ b/util/cast/pkg.go
@@ -1,4 +1,4 @@
 // Package cast convert types safely and drop incompatible types during conversion
 //
 // it is inspired by https://github.com/spf13/cast
-package cast // import "github.com/dyweb/gommon/cast"
+package cast // import "github.com/dyweb/gommon/util/cast"