Updating to ProsperDatareader v2

Updated commands to use ProsperDatareader v2

Changed news feeds from Google->Robinhood

Update slackbot quote behavior

Updates slackbot quote behavior. Removes "`" requirement

• Request by @gregoberfield

Fixing build issue with pandas==0.21.0

Pandas==0.21.0 causes build/compile issues. Updated requirements to make easier to build

• Quarantined pandas==0.21.0 to be excluded from valid version targets
• Removed unused libraries
  • plotnine
  • pandas-datareader <-- prob going to keep that removed with RIP Yahoo
• Added Restart=always to .service files to avoid discordbot issues with closing unexpectedly
• Updated .travis.yml to remove "-U"

Adding currency to !coin command -- Discord

Updates !coin to accept an optional "currency" argument

No updates to slack bot

Releasing Discord Parity

Retires old ProsperBot b/c of Yahoo API death. Long live ProsperBot

• Adds discord coverage to bot framework
• Mirrors (most) functionality from prosper_slackbot
• Adds !version, !price, and !coins commands to discord service
• Retires old ProsperBot from EVEprosper/ProsperUtilities

Adding news command to slackbot

Adds news <ticker> command to slackbot

• Updating pip requirements
• BUGFIX: slack_utils.parse_message_metadata() behavior in PM's to fix #1
• Adds news + "best vader sentiment" lookup from ProsperDatareader
• Updating tests for new features
• removing check_coins from connections as unused
• renaming .service files to include "prosper" and avoid potential namespace collisions