MICO Wechat spp demo v1.0

Prepare to release.

Update README.md

Update 9.29

1. Add Easylink plus configuration mode, remove Easylink v1
2. Blink system led every 100 ms in configuration mode, and 500 ms
after get ssid/password from easylink
3. Add delegate: ConfigEasylinkIsSuccess
4. MICO library update to 2.16, support calling timer function from ISR

Complete all project and remove 3161/1081

OS Timer can be used in ISR

OS Timer can be used in ISR

Release 1.2.3

Remove debug log from library

Release 1.2.2

1. Update library version to 1.14,  fix a problem that OS tick may go
wrong if mcu enter deep sleep mode
2. SPP demo update to 1.4, HA demo update to 3.1

Update 7.28

1. remove easylink vars from  struct current_mico_status_t
2. Recover bonjour service lost in demo
3. Clear no usage var: signal from struct current_mico_status_t