Increase version to 1.6.0.

GitOrigin-RevId: baab600dbf0b3f4014b836e06da09b9b825181d4

Improve link to examples.

GitOrigin-RevId: 06bde29eb0eca4a02ff2cf5ae559aa60ca9773f9

Fix g++9 warnings.

GitOrigin-RevId: 5f0565bfaefff9bf41f372f2f249489650985fae

Improve JavaScript example README.

GitOrigin-RevId: 4ea310d3c4fae50e39a85ac2db702ad6d0617995

Properly fix prompt printing in C# example.

GitOrigin-RevId: 4a9306738d35a3ba0893ae65922a5bcef7c2f644

Increase TDLib version to 1.1.1.

GitOrigin-RevId: 0ba6d376f892d751dc74a4f0dbf9aaeb09f484ca

Add change log.

GitOrigin-RevId: bbffbec7d281254a1fd430064e3cfe620df87c0a

Project import generated by Copybara.

GitOrigin-RevId: 318483224ad6164d9966f731d60cde37039bb2d4