Dictionary with lock

bug: [sc-741] add public init (#23)

* bug: [sc-741] add public init

Dictionary with lock

feat: [sc-741] add helper for map with lock (#22)

* feat: [sc-741] add helper for dictionary with lock

fix: fix rate issue

chore: fix rate calculation and cover by tests [sc-445]  (#21)

chore: fix rate calculation and cover by tests

Initial versioned tag

0.0.6

Update ProcessingRate.swift

Helper for counting processing rate per second

feat: basic metrics for ProcessingRate [sc-445]

Helper for retain objects

0.0.4

feat: [sc-587] helper for retaining objects (#18)

Helper for blocking calls

0.0.3

feat: [sc-668][sc-669] add helper method for calling blocking functio…