industrial_core: 0.3.4-1 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `industrial_core` to `0.3.4-1`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.9`
- previous version for package: `0.3.4-0`

## industrial_core

```
* Fix #67 <https://github.com/ros-industrial/industrial_core/issues/67>.
```

## industrial_deprecated

```
* No change
```

## industrial_msgs

```
* No change
```

## industrial_robot_client

```
* robot_client: workaround for #46 <https://github.com/shaun-edwards/industrial_core/issues/46>. Fix #67 <https://github.com/shaun-edwards/industrial_core/issues/67>.
  This is an updated version of the workaround committed in 9df46977. Instead
  of requiring dependent packages to invoke the function defined in the
  CFG_EXTRAS cmake snippet, the snippet now sets up the linker path directly.
  Dependent packages now only need to remember to explicitly list their
  dependency on industrial_robot_client and simple_message in their
  add_library(..) statements.
* Contributors: gavanderhoorn
```

## industrial_robot_simulator

```
* No change
```

## industrial_trajectory_filters

```
* No change
```

## industrial_utils

```
* No change
```

## simple_message

```
* robot_client: workaround for #46 <https://github.com/shaun-edwards/industrial_core/issues/46>. Fix #67 <https://github.com/shaun-edwards/industrial_core/issues/67>.
  This is an updated version of the workaround committed in 9df46977. Instead
  of requiring dependent packages to invoke the function defined in the
  CFG_EXTRAS cmake snippet, the snippet now sets up the linker path directly.
  Dependent packages now only need to remember to explicitly list their
  dependency on industrial_robot_client and simple_message in their
  add_library(..) statements.
* Contributors: gavanderhoorn
```