Features to add

[timkpaine]

• https://iexcloud.io/docs/api/#initial-claims
• https://iexcloud.io/docs/api/#institutional-money-funds
• https://iexcloud.io/docs/api/#retail-money-funds
• https://iexcloud.io/docs/api/#technical-indicators
• https://iexcloud.io/docs/api/#spinoff
• https://iexcloud.io/docs/api/#security-swap
• https://iexcloud.io/docs/api/#security-reclassification
• https://iexcloud.io/docs/api/#right-to-purchase
• https://iexcloud.io/docs/api/#return-of-capital
• https://iexcloud.io/docs/api/#distribution
• https://iexcloud.io/docs/api/#bonus-issue
• https://iexcloud.io/docs/api/#rights-issue