Can we allow more file types to be uploaded, such as IDF, CSV, etc.?

edit

Currently if I try to upload a file type which is not a standard image file I get the following error.

It would be useful to be able to upload IDF files, as well as other file types such as EnergyPlus outputs, OSM files, etc.

It's currently possible to upload an IDF (or any other file type) by changing the extension it, e.g. <my_file_name>.idf becomes <my_file_name>.jpg, which seems to negate any security benefits of blocking arbitrary file uploads (while also providing a hacky workaround).

Example:
C:\fakepath\IDF.jpg - right-click and save as IDF.idf.

I see two things that could happen:

1. Fix the renamed file workaround by actually checking filetype (with file on Linux or TrID on Windows) rather than trusting the extension, and provide/recommend some other standard way of sharing files

2. Allow arbitrary file uploads - up to a size limit? - disallow executables? - and warn downloaders that they are downloaded at their own risk (as with any other file on the internet)

I'm sure there are other options but I wanted to get the idea out there.