Pyslvs

+ Remove commas of link expression.
+ Turn on Cython "binding" option.

+ Periodic update.

+ All setting keys turn into lowercase.
+ Rename submodule "Adesign" to "metaheuristics".
+ Replace "time.perf_counter()" to "time.process_time()".
+ Correction of the random seed in Cython module.
+ Implement TLBO.
+ Add a simple test objective function.
+ Remove the entry point of unit test.

+ Manage Sketch Solve by CMake.
+ Use C++17 as default.
+ Make "Graph.degrees" public.
+ Add "Graph.adjacency_matrix" method.
+ Isomorphism:
+ More methods in "Graph" class.
+ Implement degree code for Graph class.
+ Remove the hints of Python objects in Cython sources.
+ Change the term "nodes" to "vertices".
+ Replace 'ground' string as "VLink.FRAME" class attribute.
+ Add placeholder "HOLDER" class variable for VPoint and VLink.
+ Add EFD algorithm.
+ Support MSVC compiler.
+ Support PEP 561.

+ Add test suit option of `setup.py`.
+ Replace "time.time" with "time.perf_counter".
+ Add Windows patch script `set_pycompiler`.

+ Add methods for Sketch Solve solver:
+ same_points
+ show_inputs
+ show_data
+ set_data
+ Add test cases for new methods.
+ Automatic fill up the link length options of data keys.
+ Add "Algorithm" class to share the same functions of three algorithms.
+ Add "slow down" option for algorithm stop limitations.
+ Member types optimization of algorithm classes.
+ Add "Horse leg" example.