Bump to v1.4

Merge pull request #136 from cvg/bindings

hloc v1.3

Release v1.2

Merge pull request #78 from cvg/dev - v1.1

- **[BREAKING]** improved structure of the SfM folders (triangulation and reconstruction), see [#76](#76)
- Support for image retrieval (NetVLAD, DIR) and more local features (SIFT, R2D2)
- Support for more datasets: Aachen v1.1, Extended CMU Seasons, RobotCar Seasons, 4Seasons, Cambridge Landmarks, 7-Scenes
- Simplified pipeline and API
- Spatial matcher
- Support for arbitrary paths of features and matches
- Support for matching multiple feature files together

Fixed wrong path to zip file in pipeline_SfM notebook (#50)