bugfix release

Two bugs fixed in this release.

• upload resuming fixed. It was broken in the previous release
• send correct user-agent string

major improvements

• certificate input via keyboard
• list archives in capsule
• support test archives in the new API
• lacli now split into two separate packages, lacli and lacore
• major refactoring removed dead code
• lacore streaming support via optional python-zipstream dependency enables not creating some temporary files