Merge branch 'release/0.1.0'
Ensure that the liblwgeom dependency is installed

Trying to execute `CREATE EXTENSION posts;` failed at runtime because
the liblwgeom dependency is not available. After installing liblwgeom,
the following commands complete successfully inside a `psql` shell:

  CREATE EXTENSION postgis;
  CREATE EXTENSION postgis_topology;
Merge branch 'hotfix/0.1.1' into develop