* memory allocation/deallocation and copy operations are no in
  tapasco_memory.h/c fragment in arch/common
* removed code from axi4mm Arch implementation and linking against
  default fragment instead

Merge remote-tracking branch 'origin/2017.2'

* fixed new issues; old scalastyle problems persist
* postponed fixing old issues

* GitLab pipelines notified me of the problem, awesome

* check all Job instances for empty filters, e.g., Platforms,
  Architectures, Kernels, and issue error message accordingly
* helpful error message contains available instances
* job is not executed, if check fails

Adds support for Gitlab CI to run the scala tests

See merge request !14

Adds support for older kernel Versions < 4.8

See merge request !13

* assumption: control slave is first in address map; following a
  non-control slave / custom
* added function to compute number of slaves for a PE coordinate
* status core now checks number of slaves an increase slot ids acc.

* error in parser caused it to fail when run without options

* remove support for 2016.2, 2016.3

* XDC set to unmanaged to avoid problems
* /uArch/irq_0 and /InterruptControl/irq are now connected by default
* renamed constant zero properly

* XDC for system clock pin accidentally had ILA instance in it
* set '-unmanaged' flag to avoid the problem in the future

* related to #137

* related to #137, but does not seem to fix it completely

* hierarchical cells make it more difficult to find connected AXI ports
* creating a correct address map would sometimes fail when using nested
  hierachical cells, fixed now