frames: add request_ts to wbinfo and use that as the timestamp in the top-frame. for exact replay, request_ts == timestamp
for latest replay / no timestamp / memento timegate, redirect to current time instead of time of last capture, while serving
last capture.
timeutils: add timestamp_now() function to return timestamp of current datetime
Add extra tests for this mode
Tracked via #72
memento support enabled by default, togglable via 'enable_memento' config property
supporting timegate and memento apis, no timemap yet
supporting pattern 2.3 for archival and pattern 1.3 for proxy modes
also:
simplify exception hierarchy a bit more, move down to utils
make WbRequest and WbResponse extensible with mixins (eg for memento)
instead of strptime to automatically clamp timestamp to allowed
range (instead of erroring) on invalid timestamps.
returns datetime.datetime as advertised instead of struct_time as well
move to distinct packages: pywb.utils, pywb.cdx, pywb.warc, pywb.util, pywb.rewrite!
each package will have its own README and tests
shared sample_data and install
