Mainnet v1.4.1.6

* fixes stale tcp connections
* fixes solid milestone getting stuck (regression)
* enables checking balance based on tips
* enables API Rate limit for new transacitons

 - Improved memory allocation

     - add checkConsistency API call for transaction promotion
     - Upgrade to BouncyCastle 1.58
     - limit inflow of new transactions from single neighbor/user

Testnet v1.4.1.3

Testnet v1.4.1.2

Mainnet v1.4.1.2

No need to delete DB, but start node once with `--rescan` flag

* Fixes DB over-storing transactions due to concurrency
* Upgrade to RocksDB 5.7.3
* Upgrades findTransaction logic to match spec (Multi-field intersection, Input field limits)
* Unified API input validation

Merge pull request iotaledger#335 from alfredch/public-testnet-1.4.1.1

Public testnet 1.4.1.1

Testnet v1.4.1.1

Mainnet v1.4.1.1

* Fixes CORS issue introduced with last release
* attachToTangle no longer overwrites tag field unconditionally

IRI Mainnet v1.4.1

* Updated IXI
* Updated Snapshot and Milestone

Merge pull request iotaledger#311 from alfredch/public-testnet-1.4.0

Public testnet 1.4.0