Careful with the changes

[leagonzalez]

Hi First, thanks to everyone who supports this package with PRs, issues, suggestions, etc. Second, please, be careful if you change the name of a function or write a function again, yesterday, the pipeline from the app that I'm working on crashed, and I just found out that it was because of a new version where there is no more a "sendMessage" function. Please, let's use @deprecated annotations.

Thanks to y'all