Fix combinatorial explosion in DSDL compiler

[pavel-kirienko]

@bbworld1 can you please verify it with the data types you defined for Yukon?

pip install git+https://github.com/UAVCAN/pyuavcan@combinatorial-explosion

Merge checklist:

• [x] Merge/release https://github.com/UAVCAN/nunavut/pull/198
• [x] Update Nunavut dependency to v1.1:

https://github.com/UAVCAN/pyuavcan/blob/2faf890c927c0e1aaf78e0d7d5f3daaa9b6bfb21/setup.cfg#L59

[coveralls]

Pull Request Test Coverage Report for Build 38601688

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 95.685%

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Files with Coverage Reduction	New Missed Lines	%
/home/appveyor/projects/pyuavcan/pyuavcan/application/plug_and_play.py	1	92.24%
<!--	Total:	1		-->

Totals
Change from base Build 38595920:	-0.02%
Covered Lines:	13409
Relevant Lines:	13855

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💛 - Coveralls

[pavel-kirienko]

@bbworld1 nudge

[bbworld1]

Hi! Apologies for the late response. It works great on the Yukon types.

No further comments here.