v0.12.0

Added

• --images option for conversion into multiple image files (#71, #123)
• --pptx option to support conversion into PowerPoint document (#107, #124)
• Set up CI for Windows with Azure Pipelines (#120)

Changed

• Rename bespoke option arguments using dot notation (#122)
• Upgrade dependent packages to the latest version (#125)

Deprecated

• Deprecate --bespoke-osc and --bespoke-progress argument options in favor of options using dot notation (#122)