Update cheatsheets

conda

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# conda
+
+> Package, dependency and environment management for any programming language.
+> Some subcommands such as `conda create` have their own usage documentation.
+> More information: <https://github.com/conda/conda>.
+
+- Create a new environment, installing named packages into it:
+
+`conda create --name {{environment_name}} {{python=3.9 matplotlib}}`
+
+- List all environments:
+
+`conda info --envs`
+
+- Load an environment:
+
+`conda activate {{environment_name}}`
+
+- Unload an environment:
+
+`conda deactivate`
+
+- Delete an environment (remove all packages):
+
+`conda remove --name {{environment_name}} --all`
+
+- Install packages into the current environment:
+
+`conda install {{python=3.4 numpy}}`
+
+- List currently installed packages in current environment:
+
+`conda list`
+
+- Delete unused packages and caches:
+
+`conda clean --all`