deeply 1.2.0+1

Modify (update/unset/rename) deeply nested maps by using a keyPath-string to access sub-maps recursively

[1.1.0] - 2020-12-08

• Update pubspec.yaml

[1.1.0+1] - 2020-12-09

• more detailed project description

[1.2.0] - 2021-03-12

• make null-safe