Rapidly calling change method no longer causes error

Fixes #6

Thanks @waeltken

Updated pg-live-select to 1.0.2

• Fixes memory leak!
• Breaking change: LivePg.prototype.cleanup() now utilizes a callback function and does no longer return a Promise.

Empty initial result set does not hang application

Fixes #4

Subscription errors now do not hang application

• Updated pg-live-select to 0.0.9
• Fixes #2

Update pg-live-select to 0.0.7

• Adds support for rows >8000 bytes

Initial release

v0.0.1

Add ready() test