Release 0.3.4

The rules now:

• Suggest using Service Studio instead of SS
• Suggest adding alternate image descriptions (alt tags can be empty if decorative, which is rare in our content)
• Suggest removal of with= and using correctly sized images instead
• Suggests writing sentences shorter than 30 words
• Warn if summary: is empty (no checks for absence of summary: for now)
• Warn if authors add just spaces for alternate image descriptions (alt tags cannot be just spaces)
• Warn if content is less than 400 alphanumeric chars long
• Warn less about some acronyms