changelog: update for 2.1.0

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Changelog
 
+## [2.1.0] - 2018-11-01
+
+### Added
+
+- `tracepoint` provider to use the kernel's stable tracepoints.
+- `delete` keyword to remove associations from a map.
+- Numeric constants can now be in binary using the `0b` prefix.
+- Numeric constants can be grouped by insering `_`'s, i.e. one million
+  could be written as `1_000_000` a 32-bit address could be written as
+  `0xc1ab_dead`
+
+### Fixed
+
+- Architecture specific files are now a part of the distribution
+  tarball (#10).
+- Multiple off-by-one issues with string literals have been fixed
+  (#14).
+- Unary operators now work with arguments that require AST rewrites
+  (#11).
+
 ## [2.0.0] - 2018-10-18
 
 The entire compiler has been re-written using the lessons learned from