New ParentContainer function

A new function ParentContainer was added because the old Parent does not return an error if the container does not have a parent.

I was implemented to solve the issue :
#35

Major speed improvements

It also adds new features (Def as Get parameter, types, ...) but mostly stays compatible with the previous version.

The biggest change is the Container type. It used to be an interface, but it is now a struct.

The documentation was reorganized.

Improve error messages in recovered panic

Also use %+v to print errors in when panic are recovered.

Improve error messages

Use %+v to print errors (instead of %s) to include things like stack traces if the type of the error supports it.

Add Builder.Set method

v2.4.0

Add the Set method to the builder (#19)

Unshared objects

Add unshared objects.

Service override

It is now possible to override a service in the Builder.

Fix closing order

This release fixes two bugs :

• The objects were closed in a random order. It was possible to have an object with a closed dependency. The objects are now closed in the right order. The dependencies are closed after the objects using them.
• The second bug was created in the last release. The Close function could be called on an object that was being built. In this case it was not possible to cast the object given to the Close function.

Fix concurrent build calls

Two requests could build the same object in the app scope.
The first one was used by the first request, while the second one was used by all the other requests. The first one was forgotten and never closed. It could happen if the first two Get calls were done at the same time or/and if the Build function took some time to be executed.

Definition tags and go modules

• put back tags in service definitions
• add support for go modules