feat(license): drop MIT license

Author: kurnevsky

COPYING.iOS

@@ -0,0 +1,13 @@
+The tox-rs developers are aware that the terms of service that apply
+to apps distributed via Apple's App Store services may conflict with
+rights granted under the tox-rs license, the GNU General Public
+License, version 3 or (at your option) any later version. The
+copyright holders of the tox-rs do not wish this conflict to prevent
+the otherwise-compliant distribution of derived apps via the App
+Store. Therefore, we have committed not to pursue any license
+violation that results solely from the conflict between the GNU GPLv3
+or any later version and the Apple App Store terms of service. In
+other words, as long as you comply with the GPL in all other respects,
+including its requirements to provide users with source code and the
+text of the license, we will not object to your distribution of the
+tox-rs through the App Store.

LICENSE-GPL renamed to LICENSE

@@ -92,10 +92,7 @@ tox-rs has contributions from many users. See [AUTHORS.md](/AUTHORS.md). Thanks
 
 ## License
 
-Dual licensed under the MIT or GPLv3+ licenses. You may use this project under the
-terms of either the MIT License or the GNU General Public License (GPL) Version 3+.
-
-For details, see [LICENSE-MIT](/LICENSE-MIT) and [LICENSE-GPL](/LICENSE-GPL).
+Licensed under [GPLv3+](/LICENSE) with [Apple app store exception](/COPYING.iOS).
 
 [Reference source repository]: https://github.com/zetok/tox-spec
 [Rust]: https://www.rust-lang.org/

LICENSE-MIT

@@ -18,7 +18,7 @@ documentation = "https://docs.rs/tox/"
 repository = "https://github.com/tox-rs/tox/"
 keywords = ["p2p", "instant-messaging", "tox", "toxcore", "networking"]
 categories = ["multimedia"]
-license = "MIT OR GPL-3.0+"
+license = "GPL-3.0+"
 edition = "2018"
 
 [badges]

README.md

@@ -10,7 +10,7 @@ authors = [
 ]
 documentation = "https://docs.rs/tox_binary_io/"
 repository = "https://github.com/tox-rs/tox/"
-license = "MIT OR GPL-3.0+"
+license = "GPL-3.0+"
 edition = "2018"
 
 [dependencies]

tox/Cargo.toml

@@ -13,7 +13,7 @@ documentation = "https://docs.rs/tox_core/"
 repository = "https://github.com/tox-rs/tox/"
 keywords = ["p2p", "instant-messaging", "tox", "toxcore", "networking"]
 categories = ["multimedia"]
-license = "MIT OR GPL-3.0+"
+license = "GPL-3.0+"
 edition = "2018"
 
 [dependencies]

tox_binary_io/Cargo.toml

@@ -13,7 +13,7 @@ documentation = "https://docs.rs/tox_encryptsave/"
 repository = "https://github.com/tox-rs/tox/"
 keywords = ["p2p", "instant-messaging", "tox", "toxcore", "networking"]
 categories = ["multimedia"]
-license = "MIT OR GPL-3.0+"
+license = "GPL-3.0+"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

tox_core/Cargo.toml

@@ -13,7 +13,7 @@ documentation = "https://docs.rs/tox_packet/"
 repository = "https://github.com/tox-rs/tox/"
 keywords = ["p2p", "instant-messaging", "tox", "toxcore", "networking"]
 categories = ["multimedia"]
-license = "MIT OR GPL-3.0+"
+license = "GPL-3.0+"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html