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Breaking Changes
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* Better public api, refactored developer api a lot (40). See the corresponding PR for more details
* Refactored internal design, caused another api change (77)
* Removed ``t`` argument from everywhere (76). The argument just scaled tangent vectors but
appeared to be very problematic in maintenance
New Features
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* Added ``Sphere`` manifold (25)
* Added ``SphereSubspaceIntersection``, ``SphereSubspaceComplementIntersection`` manifolds (29)
* Added expmap implementation (43)
* Added dist, logmap implementation (44)
* Added Poincare Ball model (45)
* Poincare Ball manifold has now new methods (78)
* Added ``ndim`` argument to ``Euclidean`` manifold
* Added ``Product`` manifold (109)
* Added ``Scaled`` manifold (109)
* Unified ``random`` for manifolds (109) so it can be used in product manifold
* Added ``origin`` for manifolds (109), it is useful for embeddings
Maintenance
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* Add gitter chat (31)
* Maintain torch>=1.0.0 only (39)
* Manifolds are Modules (49)
* Replace deprecated functions in torch>=1.1.0 (67)
* Remove PyManOpt from test requirements (75)
* Add pylint, pydoctest, pydocstyle to travis
Bug Fixes
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* Make pickle work with ManifoldTensors (47)
* Resolve inconsistency with tensor strides and optimizer updates (71)