upgrade kotlin version

[doyaaaaaken]

refs #74

[codecov]

Codecov Report

Merging #75 (2ce5a88) into master (08cd54c) will decrease coverage by 12.83%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master      #75       +/-   ##
=============================================
- Coverage     95.99%   83.16%   -12.84%     
  Complexity      151      151               
=============================================
  Files            21       21               
  Lines           974      974               
  Branches         68      193      +125     
=============================================
- Hits            935      810      -125     
  Misses           16       16               
- Partials         23      148      +125     

Impacted Files	Coverage Δ	Complexity Δ
...thub/doyaaaaaken/kotlincsv/parser/CsvParserTest.kt	62.79% <0.00%> (-30.24%)	1.00% <0.00%> (ø%)
.../doyaaaaaken/kotlincsv/client/CsvFileWriterTest.kt	74.41% <0.00%> (-23.26%)	4.00% <0.00%> (ø%)
...thub/doyaaaaaken/kotlincsv/client/CsvReaderTest.kt	76.28% <0.00%> (-21.14%)	1.00% <0.00%> (ø%)
...aaaaken/kotlincsv/client/BufferedLineReaderTest.kt	72.00% <0.00%> (-14.00%)	1.00% <0.00%> (ø%)
...thub/doyaaaaaken/kotlincsv/client/CsvWriterTest.kt	87.16% <0.00%> (-12.84%)	4.00% <0.00%> (ø%)
...thub/doyaaaaaken/kotlincsv/dsl/CsvReaderDslTest.kt	88.88% <0.00%> (-11.12%)	1.00% <0.00%> (ø%)
...thub/doyaaaaaken/kotlincsv/dsl/CsvWriterDslTest.kt	90.90% <0.00%> (-9.10%)	1.00% <0.00%> (ø%)
.../kotlincsv/client/CsvReadWriteCompatibilityTest.kt	92.30% <0.00%> (-7.70%)	2.00% <0.00%> (ø%)

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