[sync] v0.2.7.5
tmp : fix bug on stg v0.2.7.5
fixbug: delayed adjusting windowsize
Interface for changing notification sound volume
[sync] 0.2.7.6
widget window tracking
Merge pull request #133 from otiai10/feature/position-tracking

widget window tracking
[sync] 0.2.7.7
Merge pull request #132 from otiai10/develop

[sync master] 0.2.7.7