v1.0.0

Core

• docs(core): Document atomic increment
• fix(core): gracefully handle label hash collisions
• feat(core)!: remove nonstandard append mode
• chore(core): Introduce Labels type
• feat(core): Allow to remove a Family from their Registry
• fix: there is a race condition when pushing and collecting histogram data

Pull

• fix(pull): Properly lock Exposer functions

Push

• chore(push): Use curl 7.80.0
• chore(push): Refactored curl_wrapper
• fix(push): Lock access to collectables_
• fix(push): remove unused variable
• feat(push): Add method to delete metrics for instance
• Rule of Five applied on Gateway, avoid unnecessary copies of std::string

Misc

• fix(clang-tidy): Fix errors detected by clang-tidy
• chore(clang-tidy): Fix modernize-use-override
• chore(clang-tidy): Fix cppcoreguidelines-special-member-functions
• docs: Prepare for 1.0.0 release
• fix(readme): update the link to the cmake example