Fixes force close caused by the JSON deserialization after upgrading from 0.2.7 or older

[ashutoshgngwr]

Changes

• Added missing proguard rules for Gson library
• Explicitly specify field names to use for serialization/deserialization from older versions

Testing

• Tested on a physical device
• Added or modified unit test cases

Others

• Fixes crash when viewing Saved Presets after upgrading 0.2.7 -> 0.3.x #110
• Connects N/A

[codecov]

Codecov Report

Merging #117 into master will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #117      +/-   ##
============================================
+ Coverage     77.45%   77.51%   +0.06%     
  Complexity      102      102              
============================================
  Files            11       11              
  Lines           683      685       +2     
  Branches         83       83              
============================================
+ Hits            529      531       +2     
  Misses           88       88              
  Partials         66       66              

Impacted Files	Coverage Δ	Complexity Δ
...a/com/github/ashutoshgngwr/noice/sound/Playback.kt	75.00% <ø> (ø)	18.00 <0.00> (ø)
...hub/ashutoshgngwr/noice/fragment/PresetFragment.kt	88.65% <100.00%> (+0.23%)	5.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f00629f...4b34687. Read the comment docs.