Merge pull request #1513 from compas-dev/tolerance_bugfix

COMPAS-2.x.LTS: Tolerance bugfix

Author: chenkasirer

CHANGELOG.md

@@ -9,8 +9,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* Added `TOL.update()` method for explicit global state modification. 
+* Added `TOL.temporary()` context manager for scoped changes.
+
 ### Changed
 
+* Changed `Tolerance` class to no longer use singleton pattern. `Tolerance()` now creates independent instances instead of returning the global `TOL`. 
+* Renamed `Tolerance.units` to `Tolerance.unit` to better reflect the documented properties. Left `units` with deprecation warning.
+
 ### Removed