feat(dew.go): return the custom validate error wrapped with the ErrVa… (

#14)

API improvements (#10)

remove unnessary println

Fix: `Register()` does not work properly for value type (#9)

Merge pull request #8 from go-dew/update-query-api

Query API should receive bus and query object directly

Merge pull request #5 from go-dew/simplify

Simplify implementation

Merge pull request #4 from go-dew/reentrance

Ensure reentrancy

Merge pull request #3 from go-dew/optimization

Add cache for handler pointers for performance boost

Update docs