Switch internally mutating methods to &mut self (#32)

* Switch multi-frame capture and file comments methods to &mut self

* Add new entry to CHANGELOG.md, reorder entry for #24

CHANGELOG.md

@@ -22,13 +22,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * Switch to Circle CI Rust 1.34.1 image.
 
 ### Fixed
-* Fix erroneous doc comments (PR #24).
+* Switch `set_capture_file_comments()` and `trigger_multi_frame_capture()` to
+  take `&mut self` (PR #32).
 * Unimplement `Clone`, `Send`, and `Sync` for `RenderDoc` struct (PR #29).
 * Correct default setting in the `get_set_capture_option()` unit test.
 * Fix improperly designed `launch_replay_ui()` method, update `triangle` example
   to match.
 * Set correct RenderDoc library path for Android clients.
 * Add missing trait re-exports to `prelude` module (PR #31).
+* Fix erroneous doc comments (PR #24).
 
 ## [0.4.0] - 2018-09-16
 ### Added

src/api.rs

@@ -291,7 +291,7 @@ pub trait RenderDocV110: RenderDocV100 {
     ///
     /// Data is saved to a capture log file at the location specified via
     /// `set_log_file_path_template()`.
-    fn trigger_multi_frame_capture(&self, num_frames: u32) {
+    fn trigger_multi_frame_capture(&mut self, num_frames: u32) {
         unsafe {
             (self.entry_v110().TriggerMultiFrameCapture.unwrap())(num_frames);
         }
@@ -353,7 +353,7 @@ pub trait RenderDocV120: RenderDocV112 {
     unsafe fn entry_v120(&self) -> &EntryV120;
 
     #[allow(missing_docs)]
-    fn set_capture_file_comments<'a, P, C>(&self, path: P, comments: C)
+    fn set_capture_file_comments<'a, P, C>(&mut self, path: P, comments: C)
     where
         P: Into<Option<&'a str>>,
         C: AsRef<str>,