v1.0.0-beta4

Changelog

1b9c202 Add SNMP configuration
f7d7018 Another example for adding nodes
d464a1d Fix ifIndex mapping in event definition
e12e8bf Fix trouble ticket fields for alarms
7511b21 Fix typo
93cd725 Reorganize and improve content
1dac608 Simplify and test ReadInput
1a73d91 Simplify logic when parsing configuration
1a3c12c Update required Go version.
44fcb2c Update version to v1.0.0-beta4
2f70865 Upgrade dependencies
dd1331b Upgrade dependencies
90848cc Upgrade dependencies.
073dd90 Validate node criteria (#27)