update coin day mechanism (lino-network#298)

* LNO-157, add documentation

* LNO-157, update equation

* LNO-159, update add coin day mechanism.

* LNO-159, update height

LINO blockchain update (lino-network#294)

* move ongoing proposal to expired

* LNO-156, blockchain update 1

* LNO-156, update event test and change proposal manager height

* LNO-156, update annual inflation calculation

LNO-148, half content reward add back (lino-network#292)

use amigo instead of json (lino-network#291)

* use amigo instead of json

* fix bug

* one more test

fix typo (lino-network#288)

* LNO-153, bug fix

* LNO-153, fix typo

Merge pull request lino-network#246 from lino-network/ytu/develop

LNO-131, update README