Micropython PSoC6 v0.2.0

What's Changed

• Ports/psoc6 timer by @NikhitaR-IFX in https://github.com/jaenrig-ifx/micropython/pull/23
• External flash implementation, tests and documentation by @boramonideep in https://github.com/jaenrig-ifx/micropython/pull/24
• Bugfixes on machine.Pin by @boramonideep in https://github.com/jaenrig-ifx/micropython/pull/25
• docs/psoc6/quickref.rst: Added completion warning note. by @jaenrig-ifx in https://github.com/jaenrig-ifx/micropython/pull/26
• Psoc6 i2c by @bargfred in https://github.com/jaenrig-ifx/micropython/pull/27
• Psoc6 i2c by @bargfred in https://github.com/jaenrig-ifx/micropython/pull/28
• docs/psoc6:fixes in docu by @boramonideep in https://github.com/jaenrig-ifx/micropython/pull/29

Full Changelog: jaenrig-ifx/micropython@v0.1.1...v0.2.0