flatsurf/sage-flatsurf: 0.4.3

Added:

• Added another example of an explicit orbit closure computation to the documentation.
• Added better error messages when an optional dependency is not installed, pointing out how this dependency could be satisfied.

Changed:

• The copy parameter of Surface_list.__init__() and __Surface_dict.__init__() now defaults to surface.is_mutable(). Before the default was True. However, in principle this should not break any existing code but only change the runtime slightly in some cases.

• The mutable parameter of Surface_list.__init__() and Surface_dict.__init__() now defaults to True. Before its default was False in many cases. This change might break some existing code. If it does, one needs to either explicitly set mutable=False in this invocation or call surface.set_immutable().

Removed:

• Removed the unused/ directory which held a collection of unused code that was moved there in 2016.

Fixed:

• Fixed some issues in documentation of Surface classes and simplified some of their implementation.

• Fixed typos that lead to runtime errors in rare cases.

Performance:

• Improved performance of polygon constructions such as triangle(26, 48, 75).