add links to readme

bump version 2.1.0

Include all versioned package files in wheel (not only python files)

Release 2.0.0

- Change MARA_XXX variables to functions to delay importing of imports

**required changes**

- Update `mara-app` to `>=2.0.0`

In `current_user_has_permissions`: When requested for a parent resour…

…ce, return `True` when permissions for one of the child resources exist

Release 1.5.0

- add config option `require_email_http_header` that enforces the presence of the email http header
- Implement previously unimplemented function `currently_user_has_permissions`.
- Implement new function `user_has_permissions`
- Remove functions `user_has_permission` and `current_user_has_permission` (they are now implemented in `mara_page.acl`)
- Remove deprecated dependency_links
- Bump minimum `mara-page` version to 1.4.0

**required changes**

- In dev environments, add this to `local_setup.py`:

```python
import mara_acl.config

# Disable http header based authentication
patch(mara_acl.config.require_email_http_header)(lambda: False)
```

- Overwrite the default `mara_page.acl` functions like this:

```python
# activate ACL
monkey_patch.patch(mara_page.acl.current_user_email)(mara_acl.users.current_user_email)
monkey_patch.patch(mara_page.acl.current_user_has_permissions)(mara_acl.permissions.current_user_has_permissions)
monkey_patch.patch(mara_page.acl.user_has_permissions)(mara_acl.permissions.user_has_permissions)
```

- If not already the case, add these two dependencies to your project requirements.txt:

```
-e git+git@github.com:mara/mara-db.git@3.2.1#egg=mara-db
-e git+git@github.com:mara/mara-page.git@1.4.0#egg=mara-page
```

Adapt to changes in mara-db

Replace sqlalchemy orm query logic with plain sql queries in order to…

… avoid idling zombie connections

Adapt to changes in the [mara-db](https://github.com/mara/mara-db) pa…

…ckage

1.1.0 Release

- Adapt to changes in mara ui
- bug fix in invite new user feature