* updated READMEs

* no longer truncate tag value

* restore span_set_tag truncation
- reason: span tags are a legacy concept so we're not touching it ~dixit ingest

* update MAX_ENVELOPE_ITEMS to only apply for sessions

* change envelope items to linked list

* add attachments MAX_ENVELOPE_ITEMS test
- no longer limited to 10; we test for 15, but have tested up to 1000 attachments locally and that works

* #define ATTACHMENT_COUNT

* update CHANGELOG.md

* fix: iOS build for breakpad

* clarify that build defaults to inproc for iOS rather than crashpad

* bump llvm-mingw too (because why not)

)

* add event_id to logs envelope
- this avoids collisions with the nil-event_id-envelope for sessions on Crashpad

* add test for logs+session on Crashpad

* extract session/logs from request

* remove event_id from logs

* generate random UUID for envelopes without event_id

…s enabled (#1466)

* add printf for logs when debug is true

* use existing SENTRY_(LEVEL) macros

* update CHANGELOG.md

* add future TODO + fix null-log

* make debug_print_log static