bump versions and add changelog entry

Author: acfoltzer

CHANGELOG.md

@@ -1,3 +1,19 @@
+### 0.2.0 (2020-04-10)
+
+- Removed the compile-time Linux version check, and replaced it with a Cargo feature.
+
+  The Linux version check was overly restrictive, even on systems that did have the right kernel
+  version installed but had older headers in `/usr/include/linux`. Beyond that, this check made it
+  more difficult to compile on a different host than what's targeted.
+
+  There is now a `linux4_14` feature flag on `userfaultfd-sys`, which turns on and tests the extra
+  constants available in that version. Since `userfaultfd` did not make use of any of those newer
+  features, it doesn't have a feature flag yet.
+
+  Applications should take care when initializing with `UffdBuilder` to specify the features and
+  ioctls they require, so that an unsupported version will be detected at runtime.
+
+
 ### 0.1.0 (2020-04-07)
 
 - Initial public release of userfaultfd-rs.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "userfaultfd"
-version = "0.1.1-dev"
+version = "0.2.0"
 authors = ["Adam C. Foltzer <acfoltzer@fastly.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -13,4 +13,4 @@ bitflags = "1.0"
 libc = "0.2.65"
 nix = "0.17"
 thiserror = "1.0.4"
-userfaultfd-sys = { path = "userfaultfd-sys", version = "0.1.1-dev" }
+userfaultfd-sys = { path = "userfaultfd-sys", version = "0.2.0" }

linux-version/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "linux-version"
-version = "0.1.1-dev"
+version = "0.1.1"
 authors = ["Adam C. Foltzer <acfoltzer@fastly.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"

userfaultfd-sys/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "userfaultfd-sys"
-version = "0.1.1-dev"
+version = "0.2.0"
 authors = ["Adam C. Foltzer <acfoltzer@fastly.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"