Use csv instead of bin for 2d polars (#171)

* Add csv functions

* Succesful csv polars

* Fix cleanup

* Move remove nan

* Geometry tests pass

* Update CI.yml

Author: 1-Bart-1

.github/workflows/CI.yml

@@ -78,6 +78,9 @@ jobs:
           - ubuntu-latest
     runs-on: ${{ matrix.os }}
     steps:
+    - name: Build PyCall
+      run: julia --project -e 'ENV["PYTHON"]=""; using Pkg; Pkg.instantiate(); Pkg.add("PyCall"); Pkg.build("PyCall")'
+      shell: bash
     - name: Install matplotlib
       run: if [ "$RUNNER_OS" = "Linux" ]; then sudo apt-get install -y python3-matplotlib; fi
       shell: bash

data/ram_air_kite_foil_cd_polar.csv

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