Folder structure

[alphaville]

@chemardes and @debdal6, I propose the following structure for this project:

• A playground/ folder where we'll be doing experimental things
• A pdesolvers/ (or however you would like to call it - find a fancy name) for your Python code; this will be a Python library
• A LICENSE file (discuss with each other and agree on the licence you want to use)
• A gpu/ folder with the GPU code
• A .gitignore file (for Python and C/C++)
• A .github/ folder because we need to set up GitHub actions for continuous integration; you can also put there issue tempates
• A CHANGELOG.md (using SemVer)
• A main README.md file

[debdal6]

@chemardes so in playground we place all our prototype python scripts which is almost all the scripts we have at the moment fancyLibraryName will be the folder where we place our packaged python libraries to be published

I can get the folder structure sorted once our current PR's are merged

Do you want to look into Licenses while I check how we can automate our versioning with Semantic Versioning? (the CHANGELOG basically)