evolve: active bookmark should move when using prev/next (#37) The #37 references the bitbucket issue for mutable-history, that can be found here: https://bitbucket.org/marmoute/mutable-history/issue/37/

commands: small language fixes in help

evolve: abort when trying to move a node on top of itself This provides a clearer error message when evolve misstakenly tries to move a changeset on top of itself. Before we got an abort with a cryptic message about trying to rebase a merge changeset. A proper fix to make sure that evolve never tries to move a node on top of itself will come in later patches.

run-tests: add executable bit

evolve: add a hook related to the new pushobsmarkers command Before the current expericment, people could hook on obsolescence marker push using pushkey. We add a new hook to serve the same purpose.

exchange: dropping dead code (issue36) This variable does not exist anywhere else in the code.

evolve: fix evolve with mercurial default MODERNCAPS have been renamed to moderncaps upstream.

simple4server: update tests Forgot to amend before pushing.

sinmple4server: advertise new cap only when advertising obsolescence This is more consistent.

evolve: do not exchange obsolescence markers when server refuse it The server can be configured to refuse obsolescence markers exchange. See changeset 48804a8d7472 for details about it. We respect server will in the client.