Exception handling, explicit ssh config, increase default timeouts

• Catch ConnectionLost exception during read operations so we can raise a scrapli exception instead of the asyncssh exception
• Explicitly pass ssh config file to asyncssh -- in this way if the user sets ssh_config_file=False we will make sure that asyncssh ignores the config file
• Bumped up the default timeout values as they were probably a little on the aggressive side -- its user configurable anyway so folks can set this to whatever they feel like!

Lock overhaul, nerf keepalives, housekeeping

• overhaul locks
• remove keepalives
• bump dev versions
• pin to soon to be released scrpali core

Minor Internal tweaks

Releasing in preparation for scrapli_netconf updates

Fixes aliveness check that seems to fail on 3.6 only ¯\_(ツ)_/¯

2020.06.06.post2

fix aliveness check that was failling only on 3.6 for some reason

Fixed first real release! (hopefully)

Merge pull request #2 from scrapli/develop

try to fix release/version

testing, dont use this!

2020.05.29

add version for pypi build