Address some smaller review comments

core/Cargo.toml

diff --git a/core/Cargo.toml b/core/Cargo.toml
index 004819c..64fa96e 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -1,15 +1,13 @@
 [package]
 name = "libtock-core"
 version = "0.1.0"
-authors = ["torfmaster <briefe@kebes.de>", "Woyten <woyten.tielesch@online.de>"]
+authors = ["Tock Project Developers <tock-dev@googlegroups.com>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [features]
 alloc = [ "linked_list_allocator" ]
 custom_panic_handler = []
 custom_alloc_error_handler = []
 
 [dependencies]
-linked_list_allocator = { optional = true, version = "=0.6.5", default-features = false }
\ No newline at end of file
+linked_list_allocator = { optional = true, version = "=0.6.5", default-features = false }

core/src/debug/platform.rs

diff --git a/core/src/debug/platform.rs b/core/src/debug/platform.rs
index 6be01d8..5f1f9f4 100644
--- a/core/src/debug/platform.rs
+++ b/core/src/debug/platform.rs
@@ -1,3 +1,3 @@
 pub fn get_stack_pointer() -> usize {
-    panic!("Not implemented yet")
+    panic!("No generic implementation.")
 }