HTTPS support (TLS, in general) - this was the most frequently requested feature

HTTP streaming support

high performance database connection pools - powered by Hikari

implemented JDBC paging

atomic application start-up

extended capabilities of the JDBC client API (async. processing, result mappers etc.)

unified data source configuration for Hibernate and JDBC (only JDBC for both)

simplified bootstrap of Hibernate

several bug fixes

many small improvements

the built-in C3P0 library has been replaced by Hikari in rapidoid-quick module

the hibernate data source configuration section has been replaced by jdbc