Remove unnecessary libraries from Dockerfile.

Merged in sobjectizerteam/shrimp-demo.next-step (pull request #4)

Support for heic-files added.

Approved-by: Nicolai Grodzitski <[email protected]>

Merging from development version.

Merge new changes for version v0.4.

Next part of switching to restinio-0.4.7.

BugFix.

Implementation of extraction of pending request is fixed.

Removed tag micro-v0.0