Support multiple services as specified in the Presentation API v2.1

[codecov-io]

Codecov Report

Merging #6 into master will decrease coverage by 0.01%. The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master       #6      +/-   ##
============================================
- Coverage     54.44%   54.42%   -0.02%     
- Complexity      235      236       +1     
============================================
  Files            65       65              
  Lines           911      915       +4     
  Branches         45       45              
============================================
+ Hits            496      498       +2     
- Misses          388      390       +2     
  Partials         27       27

Impacted Files	Coverage Δ	Complexity Δ
...ons/iiif/presentation/model/impl/v2/RangeImpl.java	25.64% <100%> (+1.95%)	5 <0> (ø)	:arrow_down:
...tation/model/impl/v2/AbstractIiifResourceImpl.java	85.71% <100%> (ø)	17 <2> (ø)	:arrow_down:
...s/iiif/presentation/model/impl/v2/ServiceImpl.java	52% <33.33%> (-2.55%)	9 <1> (+1)

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[abollini]

I have revert the commit d4f9dc5 as adding support for multiple services everywhere change the serialization of the manifest and this break some tests other than most probably many client. The IIIF examples show just a single service for

• images
• thumbnails
• service (IIIF Search API, a search service can have a nested service for autocomplete)

with these changes I'm able to generate manifest like this one http://uvdemo.4science.it/manifest/hamlet

[abollini]

Hi, sorry I was unable to immediately apply the suggested changes and I have forget about that for a while... I have renamed the methods to reflect the plural of services and updated the relevant test so that the build success