Add pointLatLon convenience method

[MoeweX]

This pull requests adds a pointLatLon convenience method as proposed in #164 .

I also noticed that the project cannot be build with Maven and Java 9 due to the error described here. Thus, I bumped the JaCoCo plugin version to 0.8.2 which is the newest one available.

EDIT: I can squash the commits if necessary.

[codecov-io]

Codecov Report

Merging #165 into master will increase coverage by 0.01%.
The diff coverage is 27.27%.

@@             Coverage Diff              @@
##             master     #165      +/-   ##
============================================
+ Coverage     75.14%   75.15%   +0.01%     
+ Complexity     1096     1093       -3     
============================================
  Files            57       57              
  Lines          3794     3800       +6     
  Branches        772      772              
============================================
+ Hits           2851     2856       +5     
- Misses          664      667       +3     
+ Partials        279      277       -2

Impacted Files	Coverage Δ	Complexity Δ
...rg/locationtech/spatial4j/io/OnePointsBuilder.java	42.85% <0%> (-11.69%)	4 <0> (ø)
...ationtech/spatial4j/shape/jts/JtsShapeFactory.java	87.93% <0%> (-0.45%)	55 <0> (ø)
...iontech/spatial4j/shape/impl/ShapeFactoryImpl.java	81.31% <42.85%> (-2.02%)	39 <1> (+2)
.../locationtech/spatial4j/shape/jts/JtsGeometry.java	77.77% <0%> (+0.35%)	80% <0%> (+1%)	⬆️
...locationtech/spatial4j/distance/DistanceUtils.java	69.75% <0%> (+0.42%)	50% <0%> (ø)	⬇️
...java/org/locationtech/spatial4j/io/ParseUtils.java	28.3% <0%> (+1.02%)	6% <0%> (ø)	⬇️
...va/org/locationtech/spatial4j/io/GeohashUtils.java	88.6% <0%> (+2.18%)	28% <0%> (ø)	⬇️

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[MoeweX]

I am not to sure about fb5aa6b, but I think it makes sense to add getLat and getLon to Point as well.

[dsmiley]

Looks good to me! Thanks. Please do squash to two commits -- one for jacoco and the other for the rest.

[MoeweX]

Thx @dsmiley , I squashed the commits.