Merge pull request #13 from lewagon/vscode-meta

handle vscode metadata

Merge pull request #10 from lewagon/clean-ids

handle id keys in cells

Merge pull request #8 from lewagon/correct-image-clean

avoid svg+xml images when cleaning

Merge pull request #7 from lewagon/execution-count

Execution count

Merge pull request #3 from lewagon/update-package3

increment package version