v2.0.0

This is a major release with a few breaking API changes to bitcore-node, here is a full list:

• Node.js v4.2 LTS is now supported: bitpay/bitcore-node#348
• Significant memory optimizations have been made: bitpay/bitcore-node#352
• Syncing percentages are more accurate: bitpay/insight-api#410
• Insight API now has configurable caching for endpoints: bitpay/insight-api#412
• Bitcore services now have access to an express subapp: bitpay/bitcore-node#355

Breaking API Changes:

• address service resetMempoolIndex method has been removed: bitpay/bitcore-node#352
• db service runAllMempoolIndexes has been removed: bitpay/bitcore-node#352