0.2.0

Changelog

3cd49a4 Add ability to choose chunk time interval and wrap Pgx Connections
b8d2a76 Add explicit support for retention policies
d1edc6d Add known limitations to README
92f0e10 Handle fields with different types accross shards
975d891 Migrate from dep to go modules
04c5d4a Prepare release 0.2.0
0f025b2 Try to speed up the CI script
ef3b488 fix booleans not recognized in a pg table