Crash when trying to open example pptx/docx files

[qarmin]

Library should not crash, just return an error

sample.docx
sample.pptx

ooxml-rs/src/document/spreadsheet/mod.rs

Line 60 in e97dc1c

let part = package.get_part("xl/_rels/workbook.xml.rels").unwrap();

thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', /home/rafal/.cargo/registry/src/github.com-1ecc6299db9ec823/ooxml-0.2.5/src/document/spreadsheet/mod.rs:60:71

[zitsen]

Library should not crash, just return an error

Agreed. will improve that.

Crash when trying to open example pptx/docx files

pptx/docx is not supported yet.