1.9.0

What's Changed - Known Issues. Use 1.10.1 instead!

• Use pg14 as an example for instructions instead of pg13. Add reference to deb and rpm packages by @jerryxwu in #463
• Document supported platforms. by @epgts in #467
• Fixing off by one error in state_agg interpolate by @WireBaron in #465
• Stabilize timevector by @WireBaron in #488
• Stabilize LTTB by @WireBaron in #495
• Stabilize accessors. by @epgts in #491
• Monthly Normalization by @thatzopoulos in #490
• Create OHLC aggregate and accompanying accessors by @rtwalker in #496

Full Changelog: 1.8.0...1.9.0