Add method argument to SimulatedAnnealing.autofit

[N-Wouda]

This PR:

• Closes Add linear updating method to SimulatedAnnealing.autofit #117.
• Adds and passes relevant tests.

[codecov]

Codecov Report

Merging #118 (cccd5ab) into master (8ef4665) will decrease coverage by 0.14%.
The diff coverage is 88.88%.

❗ Current head cccd5ab differs from pull request most recent head f3e717e. Consider uploading reports for the commit f3e717e to get more accurate results

@@             Coverage Diff             @@
##            master     #118      +/-   ##
===========================================
- Coverage   100.00%   99.85%   -0.15%     
===========================================
  Files           28       28              
  Lines          665      668       +3     
===========================================
+ Hits           665      667       +2     
- Misses           0        1       +1     

Impacted Files	Coverage Δ
alns/ALNS.py	100.00% <ø> (ø)
alns/accept/RecordToRecordTravel.py	100.00% <ø> (ø)
alns/accept/SimulatedAnnealing.py	98.11% <88.88%> (-1.89%)	⬇️

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[N-Wouda]

@leonlan this should be better