move DisplaySink code out from yaxpeax-x86

it was built in-place around yaxpeax-x86, hoisted out once it seemed
suitable and could be generalized. yay!

also include a Makefile in yaxpeax-arch now to test that various crate
feature flag combinations.. work.

1 files changed, 4 insertions, 2 deletions

diff --git a/Cargo.toml b/Cargo.toml
index c6d3cbf..e1d3357 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,9 +23,11 @@ thiserror = "1.0.26"
 lto = true
 
 [features]
-default = ["std", "use-serde", "colors", "address-parse"]
+default = ["std", "alloc", "use-serde", "colors", "address-parse"]
 
-std = []
+std = ["alloc"]
+
+alloc = []
 
 # enables the (optional) use of Serde for bounds on
 # Arch and Arch::Address