Merge pull request #2 from voltusdev/update_go_mod

update go mod

Bugfix: Date.MarshalJSON incorrectly wrote the zero value as a blank …

…string, which might raise difficulties are the receiver. Code that relied on this incorrect behaviour might see this as a breaking change.

Bugfix: Date.MarshalJSON incorrectly wrote the zero value as a blank …

…string, which might raise difficulties are the receiver. Code that relied on this incorrect behaviour might see this as a breaking change.

Bugfix: Date.MarshalJSON incorrectly wrote the zero value as a blank …

…string, which might raise difficulties are the receiver. Code that relied on this incorrect behaviour might see this as a breaking change.

Updated dependencies. Began work on forked repo for `period`.

Updated dependencies. Began work on forked repo for `period`.

Date JSON marshalling/unmarshalling tweaked so that the zero value ca…

…n be represented as a blank string and the tag 'omitempty' can now work.

Date JSON marshalling/unmarshalling tweaked so that the zero value ca…

…n be represented as a blank string and the tag 'omitempty' can now work.

upgrade to Go 1.17

updated dependencies