Update master_changes.md

master_changes.md

@@ -96,6 +96,7 @@ users)
   * [BUG] Fix origin opam file retrieval when opam originate from locked file [#5079 @rjbou - fix #4936]
   * [BUG] When reinstalling a package that has a dirty source, if uncommitted changes are the same than the ones stored in opam's cache, opam consider that it is up to date and nothing is updated [4879 @rjbou]
   * [BUG] Handle external dependencies when updating switch state pin status (all pins), instead as a post pin action (only when called with `opam pin` [#5047 @rjbou - fix #5046]
+  * Allow opam pin remove to take a package (<pkg>.<version>) as argument [#5325 @kit-ty-kate]
 
 ## List
   * Some optimisations to 'opam list --installable' queries combined with other filters [#4882 @altgr - fix #4311]
@@ -355,6 +356,7 @@ users)
   * Update and reintegrate pin & depext test `pin.unix` in `pin` test, with test environment, there is no more need to have it only on unix [#5268 @rjbou @kit-ty-kate]
   * Add a reftest testing for system package manager failure [#5257 @kit-ty-kate]
   * Add autopin test including deps-only, dev-deps, depexts; instrument depext handling to allow depext reftesting [#5236 @AltGr]
+  * Test opam pin remove <pkg>.<version> [#5325 @kit-ty-kate]
 
 ### Engine
   * Add `opam-cat` to normalise opam file printing [#4763 @rjbou @dra27] [2.1.0~rc2 #4715]
@@ -526,6 +528,7 @@ users)
   * `OpamFile.OPAM.effectively_equal`: return true if an extra-source url changes but not its checksum (as for url) [#5258 @kit-ty-kate]
   * `OpamFormula`: add generic `formula_to_cnf` and `formula_to_dnf`, and use them in `to_cnf` and `to_dnf` [#5171 @cannorin]
   * `OpamFilter`: add `?custom` argument in `to_string` to tweak the output [#5171 @cannorin]
+  * Add OpamPackage.to_string_opt_version [#5325 @kit-ty-kate]
 
 ## opam-core
   * OpamSystem: avoid calling Unix.environment at top level [#4789 @hannesm]