Log Message:
nanotodon: update to 0.2.0.

pkgsrc changes:
- adapt Makefile to upstream build structure changes

Upstream changes:
 https://github.com/taka-tuos/nanotodon/releases/tag/0.2.0

MANY UPDATES!

Whats New
* PRIVATE and UNLISTED toots are available now
* Hide PRIVATE toots on default boot

Note
* Without -unlock, will PRIVATE toots are not visible