Test sbml version

[ChristianLieven]

• [x] fix #284, fix #554, fix #314
• [x] description of feature/fix
• [x] tests added/passed
• [x] add an entry to the next release

Changelog:

• Read SBML files with modified parser that can collect the level, version and whether the FBC package is used.
• Validate the SBML structure with the libSBML python API if the parser errors and produce a simple SBML validation report.
• Add test cases that report on the level and version, and FBC availability through the memote reports.

[ChristianLieven]

@Midnighter what was it that needed to be done here? Now that you've probably started the test suite again we can go through this in a classic review, right?

[Midnighter]

I'm finishing up my work on this and I will try to put it into neat commits.

[codecov[bot]]

Codecov Report

Merging #584 into develop will decrease coverage by 0.48%. The diff coverage is 60.34%.

@@            Coverage Diff             @@
##           develop    #584      +/-   ##
==========================================
- Coverage    80.29%   79.8%   -0.49%     
==========================================
  Files           57      59       +2     
  Lines         3014    3095      +81     
  Branches       414     423       +9     
==========================================
+ Hits          2420    2470      +50     
- Misses         524     552      +28     
- Partials        70      73       +3

Impacted Files	Coverage Δ
memote/suite/cli/callbacks.py	50% <100%> (-5.56%)	:arrow_down:
memote/suite/collect.py	77.77% <100%> (+0.96%)	:arrow_up:
memote/suite/cli/runner.py	42.64% <18.75%> (-1.38%)	:arrow_down:
memote/utils.py	76.47% <20%> (-3.53%)	:arrow_down:
memote/suite/cli/reports.py	46.92% <22.72%> (-3.08%)	:arrow_down:
memote/suite/api.py	62.5% <70.58%> (+0.59%)	:arrow_up:
memote/support/validation.py	85.29% <85.29%> (ø)
memote/suite/tests/test_sbml.py	88.23% <88.23%> (ø)

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