More work on plumbing attribute accumulation through (#263)

* Plumb bounding boxes through potential intersections

* Quick bbox reject for bins that can't possibly intersect

* Inching toward attribute accumulation in megatile handling

* Some sort of test for how all these things interact with each other.

Automatic numeric attribute accumulation does *not* apply to attributes
that have an explicit attribute accumulator set, because the order of
operations is too messy and weird

* More sketching

* More sketching

* Actually do some accumulation

* Put all that behind an --accumulate-numeric flag

* Use the same attribute accumulation logic in binning as in megatiles

* Fix backwards conditional

* Add means, but somehow I have some counts of 0

* Handle aggregated attributes with no base attribute in the feature

* Checkpoint before I break everything

* Found a flaw, now to debug

* Fix a typo that broke accumulation

* Add binning tests

* Make sure IDs make it through on the bins

* Fix count/mean accumulation

* Make the numeric accumulation prefix configurable

* Make sure the accumulate test still works with a different prefix

* Forgot to update this test

* More testing to make sure cluster sizes make it all the way through

* Fix neglected --accumulate-attribute when binning

* Mark unexercised attribute accumulation cases as "can't happen"

* Factor out numeric preservation

* Attrs with the accumulation prefix are just preserved, not accumulated

* Test behavior of prefixed attributes

* Plumbing for exclude and exclude-prefix

* Implement and test attribute prefix stripping in overzoom

* Update version and changelog

* For debugging, make an attribute list of source feature IDs

* Revert "For debugging, make an attribute list of source feature IDs"

This reverts commit 65fc99c9d1.

main.cpp

@@ -97,6 +97,7 @@ long long extend_zooms_max = 0;
 int retain_points_multiplier = 1;
 std::vector<std::string> unidecode_data;
 size_t maximum_string_attribute_length = 0;
+std::string accumulate_numeric;
 
 std::vector<order_field> order_by;
 bool order_reverse;
@@ -3084,7 +3085,7 @@ int main(int argc, char **argv) {
 		{"attribute-type", required_argument, 0, 'T'},
 		{"attribute-description", required_argument, 0, 'Y'},
 		{"accumulate-attribute", required_argument, 0, 'E'},
-		{"accumulate-numeric-attributes", no_argument, &additional[A_ACCUMULATE_NUMERIC], 1},
+		{"accumulate-numeric-attributes", required_argument, 0, '~'},
 		{"empty-csv-columns-are-null", no_argument, &prevent[P_EMPTY_CSV_COLUMNS], 1},
 		{"convert-stringified-ids-to-numbers", no_argument, &additional[A_CONVERT_NUMERIC_IDS], 1},
 		{"use-attribute-for-id", required_argument, 0, '~'},
@@ -3327,6 +3328,8 @@ int main(int argc, char **argv) {
 				unidecode_data = read_unidecode(optarg);
 			} else if (strcmp(opt, "maximum-string-attribute-length") == 0) {
 				maximum_string_attribute_length = atoll_require(optarg, "Maximum string attribute length");
+			} else if (strcmp(opt, "accumulate-numeric-attributes") == 0) {
+				accumulate_numeric = optarg;
 			} else {
 				fprintf(stderr, "%s: Unrecognized option --%s\n", argv[0], opt);
 				exit(EXIT_ARGS);