v1.1.0

• Add support for IE11 (https://github.com/BridgeAR/safe-stable-stringify/commit/917b6128de135a950ec178d66d86b4d772c7656d)
• Fix issue with undefined values (https://github.com/BridgeAR/safe-stable-stringify/commit/4196f87, https://github.com/BridgeAR/safe-stable-stringify/commit/4eab558)
• Fix typescript definition (https://github.com/BridgeAR/safe-stable-stringify/commit/7a87478)
• Improve code coverage (https://github.com/BridgeAR/safe-stable-stringify/commit/ed8cadc, https://github.com/BridgeAR/safe-stable-stringify/commit/b58c494)
• Update dev dependencies (https://github.com/BridgeAR/safe-stable-stringify/commit/b857ea8)
• Improve docs