sopel-wolfram v0.2.1 "Mae shika mukanee"

Rushed out sans release name because it's already past 2am. One will be added later, when I have time (and energy) to think of one. I finally added one while thinking up names for the upcoming v0.3.0.

Updates:

• Output now split into multiple messages when line breaks are present (#4)
• Tell pip we do not want wolframalpha 3.0 yet (#6)