MVP feature development tasks

[ju4n97]

General

• Fully implement RSVP mode #17
• Fully implement bionic mode #18
• Implement package generator #19
• Support commands with arguments #20
• Fix slow types #28
• Make context types inferable #32

Parsers

• [Parser] Implement PDF parser #21
• [Parser] Implement ePUB parser #22
• [Parser] Implement HTML parser #23

Plugin system

• Define plugin interfaces #24
• [Plugin] Micropauses for RSVP #25
• [Plugin] Speech-to-text #26