Conductor 0.7.0

What's Changed

• conductor: added execution commit level v2 by @sambukowski in #474
• composer: report cause of failed nonce fetch by @SuperFluffy in #492
• use fork of tendermint with backported reqwest client by @SuperFluffy in #498
• conductor: never recycle websocket clients by @SuperFluffy in #499
• conductor: spawn driver as task and report exit by @SuperFluffy in #500
• conductor: resubscribe with backoff instead of failing by @SuperFluffy in #501
• release(conductor): 0.7.0 by @joroshiba in #502

Breaking Changes

• Removed disable_finalization config and replaced with execution_commit_level

Full Changelog: v0.6.1--conductor...v0.7.0--conductor