* Set up itest for sending free secret key
* Got itest working for download and unlock free squeak
* Simplified getting offer or free secret key from controller
* Rename get offer method of controller
* Add check for per address rate limit in controller
* Delete rate limiter class
* Add check for interest and rate limit to save received squeak
* Got single squeak download working using temporary interest
* Use polymorphic interest classes for temporary interest manager
* Change order of checking temporary interests before permanent interests
* Used timed dict for temporary interests
* Include check for limit in temporary interest
* Update connect peer and disconnect peer rpc to use peer addrss struct
* Update get connected peer rpc to use peer addrss struct
* Use peer address struct in create saved peer rpc
* Use peer address struct in squeak peer struct
* Use peer address for requests functions in frontend
* Update frontend build
* Remove uploading and downloading fields and add autoconnect field in all backend code
* Remove uploading and downloading fields and add autoconnect in frontend
* Update frontend build
* Refactor network commands into network manager
* Start and stop peer server and peer client inside network manager
* Pass handle connection fn to peer handler instead of self object
* Remove old comments
* Got basic tcp connection working
* Got passing itest for open tcp connection
* Got most of protocol working. still need to send offer correctly
* Got offer from peer over tcp connectrion
* Got single squeak download working on tcp connection
* Remove rpc peer client
* Remove old rpc clients
* Remove old squeak client modules
* Got sharesqueaks peer message working
* Remove peer rpc server
* Remove server rpc fixtures
* Remove old itests
* Remove old sync modules
* Run worker background task to keep peers synced
* Add peer connection worker
* Add test for disconnect peer
* Remove old itest util
* Delete old peer rpc client helpers.
* Handle insert duplicate received offer
* Use more specific exception handling for duplicate offer insert
* Move squeak controller to core package
* Use config object in squeak controller to access configs
* Remove old comments in squeak controller
* Update unit test
* Add unit test for getting network with squeak_controller
* Rename secret_key
* More work to convert to using PTLC
* Updated most code for PTLC
* More work to use ptlc with secret key
* Got itest passing
* Remove unused import
* Use version 0.5.0 of squeaklib
* Added simple unit test for squeak controller
* Use modular addition subtraction for secret key nonce tweak
* Move util to core folder
* Store secret key as hex in database
* Store nonce as hex in db
