feat: create icons from Icon Composer

feat: show loading indicators on download tabs

some suggests to do preloading but just leave it as is for now

build(release): bump version to 2.1 (211)

build(release): bump version to 2.0 (205)

build(release): bump version to 1.7

build(release): bump version to 1.6.1

close #64
related with #59

build(release): bump build number

build(release): bump version to 1.5

build(release): bump version to 1.4 (5)

build(release): bump version to 1.3.0 (3)