Use JNI cache to improve performance

[luneo7]

Makes use of JNI cache of ArrayList and LatLng and used methods so we don't have to lookup those every time that we run the lib

[luneo7]

/cc @isaacbrodsky @dfellis

[coveralls]

Pull Request Test Coverage Report for Build #434

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.817%

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Totals
Change from base Build #432:	0.0%
Covered Lines:	501
Relevant Lines:	507

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💛 - Coveralls