Successful --user install, but ImportError when tested

I've successfully installed landsat-util after following the instructions [here](https://pythonhosted.org/landsat-util/installation.html)

Unfortunately, I get the following error when testing with a basic search -

```shell
$ landsat search --lat 38.9004204 --lon -77.0237117
RuntimeError: module compiled against API version 0xb but this version of numpy is 0xa
Traceback (most recent call last):
...
# Various errors not shown
...
File "/home/de-admin/.local/lib/python3.6/site-packages/scipy/ndimage/filters.py", line 36, in
from . import _nd_image
ImportError: numpy.core.multiarray failed to import
```

I have tried updating numpy, using the following code for example:
```shell
$ python3 -m pip install numpy -I --user
```

however I then get the following error:
```
$ landsat search --lat 38.9004204 --lon -77.0237117
ImportError: /home/de-admin/.local/lib/python3.6/site-packages/scipy/special/_ufuncs.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _gfortran_stop_numeric_f08
```

I've tried installing landsat-util with various sudo as well as --user and python versions 2, none of which has resolved the issue.

Any advice on what to try next to get landsat-util functional?

Many thanks
Josh