Add scoreMeaningfulDigits parameter:
if > 0, number of meaningful digits in the fractional part of the score,
if < 0, number of digits to discard from the integer part of the score,
if == 0, round the score
if == null, leave the score intact

Example, score=34.461
if scoreMeaningfulDigits=2 then score=34.46,
if scoreMeaningfulDigits=-1 then score=30
if scoreMeaningfulDigits=0 then score=34
Merge pull request #1 from divchenko/feature/scoreMeaningfulDigits

Add scoreMeaningfulDigits parameter
Make scoreMeaningfulDigits optional
Merge branch 'master' of https://github.com/divchenko/sensei

Conflicts:
	build.gradle
	clients/java/src/main/java/com/senseidb/search/client/req/SenseiClientRequest.java
	gradle.properties

These were all resolved. Also upgraded version # of fastJson.