fix service stats processing time format

Fixes Service stats processing time #99

Return integer so nats micro stats works.

fix service stats processing time format

@izytechAB

connection package size management

@chazzbg

NATS Microservice implementation

thanks @EmilJimenez21

ack,nack,wpi msgs / bucket case / stream max age config

• jetstream ack/nack/wpi msgs fix by @chazzbg
• bucket case fix by @BZValoche
• stream max age configuration by @digibeuk

client.disconnect method

thanks @digibeuk

bucket null values getter

0.22.0

bucket null values getter

stream purge / error checking / readme fix

thanks @g41797, @ro0NL and @edipoelwes2

stream replica configuration fix / ping prolongate check fix

thanks @ro0NL

message queue

see queue usage examples in readme (pub/sub and consumer examples)