Deprecate AEVM (#375)

* Deprecate AEVM

* Fix test, changelog

* Restore old rebar

* rebar lock fix

* undo export

Co-authored-by: Gaith Hallak <gaithhallak@gmail.com>

* undo export

Co-authored-by: Gaith Hallak <gaithhallak@gmail.com>

* Solve GH suggestions

* Fix the docs

* update docs

* Remove unused tests

* undo weird change

Co-authored-by: Gaith Hallak <gaithhallak@gmail.com>

test/contracts/test.aes

@@ -1,12 +1,4 @@
-// This is a custom test file if you need to run a compiler without
-// changing aeso_compiler_tests.erl
-
-include "List.aes"
-
-contract IntegerHolder =
-  type state = int
-  entrypoint init(x) = x
-  entrypoint get() = state
-
-main contract Test =
-  stateful entrypoint f(c) = Chain.clone(ref=c, 123)
+contract ShareTwo =                                                                           
+  record state = {s1 : int, s2 : int}                                                         
+  entrypoint init() = {s1 = 0, s2 = 0}                                                        
+  stateful entrypoint buy() = ()