Add --reconnect-after flag to HTTP client

This release adds the --reconnect-after flag to HTTP client, to fix an issue with Windows clients which were reconnecting too quickly, before the server detected them as disconnected. Example usage: inlets-pro client --reconnect-after 60s

Changelog for 0.9.0-rc3:

Commits
fd17a28 Update instructions for helm chart repo by @alexellis
ac4e181 Update helm chart repo instructions by @alexellis
56c2c8f Update chart URL by @alexellis
df48283 Publish initial chart versions by @alexellis
78c6734 Add chart makefile by @alexellis

Generated by Derek