Tulip release notes

v0.7.1 (January 8, 2021)

Bug fixes

Fix a bug in add_variable! and the handling of zero coefficients(#77, #79)
Fix some type instabilities (#71, #76)
Fix docs URL in README (#70)

New features

Tulip's version is exposed via Tulip.version() (#81)
Multiple centrality corrections in MPC algorithm (#75)
Support reading .gz and .bz2 files (#72)

Others

Move CI to GitHub actions (#73)
Use new convention for test-specific dependencies (#80)
Bump deps (#71,#74)

v0.5.1 (August 15, 2020)

Fix URLs following migration to jump.dev (#51)
Fix bug in constraint/variable deletion (#52, #53)

v0.5.0

Support the MOI attribute Name (#47)
Simplify the user interface for choosing between different linear solvers (#48)

v0.4.0 (April 25, 2020)

Re-write data structure and interface (#44)
Add presolve module (#45)
Move UnitBlockAngular code to a separate package (#46)

v0.3.0 (February 29, 2020)

Improved documentation for parameter management (#43)
More flexible management of linear solvers (#37, #40)
- Introduce two new parameters to choose linear solver
  - ls_backend specifies which backend is used to solve linear systems
  - ls_system specifies which linear system (augmented system or normal equations) is solved
- Generic tests for custom linear solvers
- Performance improvements when using CHOLMOD
Improved MPS reader (#36)

v0.2.0 (December 26, 2019)

Switch type unions to constant in the MOI wrapper (#32)
Free MPS format reader (#33). Some .mps files in fixed MPS format may no longer be readable, due to, e.g.,
- spaces in constraint/variable names
- empty name field in RHS section
Re-write of the linear algebra layer (#34)
Integration of LDLFactorizations.jl (#35) for solving problems in arbitrary precision.

v0.1.1 (October 25, 2019)

Support for MOI v0.9.5 (#31)
Catch exceptions during solving (#29)
- Numerical trouble during factorization
- Iteration and memory limits
- User interruptions
Create a CITATION.bib file (#26)
Describe problem formulations in the docs (#26)