Changelogs

v1.1.3 -> v1.2.0

[Feat] Include Suspense within the library to allow build of next >= 14.1.0 to to build successfully. Regarding issues #22 and #24
[Ref] Refactor code to remove unnecessary files.
[Ref] Add default export of Next13ProgressBar from the package. i.e:
```
import Next13ProgressBar from 'next13-progressbar';
```
can now be used.