EVO install

EVO是评价SLAM比较好用的工具，大家都经常使用。
安装请参考官方指引：evo
但是在安装过程中容易遇到问题，比如：

ERROR: After October 2020 you may experience errors when installing or updating packages. This is because pip will change the way that it resolves dependency conflicts.

We recommend you use --use-feature=2020-resolver to test your packages with the new resolver before it becomes the default.

seaborn 0.11.0 requires matplotlib>=2.2, but you'll have matplotlib 2.1.1 which is incompatible.

官方的安装指令是：

pip install --editable . --upgrade --no-binary evo

但是运行之后出错了，所以改成：

pip install evo --upgrade --no-binary evo --use-feature=2020-resolver