Including plain text files as code blocks

[marcusrettig]

Often I run a program e.g. python x.py > res.txt and want to include the output res.txt as a code block in iA using content blocks. Obviously, using the .txt extension will include it as normal text. As a workaround I sometimes use another extension e.g. res.r, but it would be nice if either there was a general extension like .out or .code, or if I could state explicitly when including the file that it should be a code block.