Swap a running app's module: --watch and the swap command

vega tui|web MODULE --watch replaces the running app's module when its
file is written again (aup watch writes it); states keep their values by
name through pure_app_replace and every web page hears of it. The file is
compared by the digest of its bytes, at most five times a second, so a
module of the same size written within the same second is not missed; a
module that does not load leaves the app as it was and is not tried
again. Modules alternate between two slots so a failed load never touches
the running one. Scripts get swap MODULE; whether a module runs frames is
now a property of the screen.

1 files changed, 0 insertions, 0 deletions

diff --git a/tests/__pycache__/check.cpython-313.pyc b/tests/__pycache__/check.cpython-313.pyc
new file mode 100644
index 0000000..04b698b
--- /dev/null
+++ b/tests/__pycache__/check.cpython-313.pyc