COPT 6.5.5
==========
Fixed an issue regarding model fingerprint, and the output may be different from previous releases.
Fixed an issue regarding python modeling.
Fixed an issue regarding LP file error handling.

COPT 6.5.4
==========
Improved performance of the Primal-Dual SDP solver.
Added direct Linear Matrix Inequalities (LMI) support for SDP.
Added dualization support for conic problem.
Fixed an issue regarding having empty constraint matrix.
Fixed performance and numerical issues in MIP presolver.
Fixed an LP post-solve issue.
Fixed other issues and bugs.
Revised documentations and examples.

COPT 6.5.3
==========
Fixed an issue regarding QP presolver.
Fixed a minor issue in MIP solver.

COPT 6.5.2
==========
Fixed an issue regarding lazy constraints.
Fixed an issue regarding SOC dual.
Fixed an issue in python interface.
Fixed a non-deterministic behavior.
Fixed other bugs and issues.
Unified Python examples programming styles.
Revised Chinese and English documentations.

COPT 6.5.1
==========
Added general constraints support in COPT Python API, including:
  MAX, MIN, ABS, AND, OR and PWL.
Added callback examples.
Fixed memory issues in C# and Java interfaces.
Fixed bugs in MIP presolver.
Fixed other bugs and issues.
Revised Chinese and English documentations.

COPT 6.5.0
==========
Major components introduced in COPT 6.5
COPT callback functionality for lazy constraints and user cuts
Enhanced indicator and SOS support

Major components introduced in previous releases
Parallelized optimization solvers:
COPT MIP solver
COPT LP barrier solver
COPT LP simplex solver
COPT (MI)SOCP solver
COPT convex (MI)QP solver
COPT convex (MI)QCP solver
COPT SDP solver
Utilities:
COPT IIS for infeasible problems
COPT Feas-Relax utility
COPT Tuner

Modeling interfaces:
Object-oriented: Python, C++, C#, Java
Third-party    : Julia, AIMMS, AMPL, GAMS, PuLP, Pyomo, CVXPY
C interfaces which work with matrices and vectors

Licensing and remote services:
COPT personal license
COPT server license
COPT floating token server
COPT cluster server

Supported platforms and OS:
Windows: x86
Linux  : x86 and arm64
MacOSX : x86 and arm64
