CHANGES_NEXT_RELEASE

- Fix: error level traces ignoring -logLevel NONE
- Fix: wrong over-logging at error level updating attributes having metadata without type 
- Fix: '+' supported in entity ids and names in URLs (Issue #1675)
- Fix: libmicrohttpd 0.9.48 included in contextBroker as static lib (previous Orion versions used 0.9.22 as dynamic library) (Issue #1675)
- Fix: list of attribute names in URI param 'type' (Issue #1749)
- Fix: long servicepath when getting in NGSIv2 (#1423)
- Fix: syntax change in string query 'q' for exist and not-exist (Issue #1751)
- Fix: sanity check for string query 'q' - detect 'left-hand-side missing' (Issue #1754)
- Fix: more sanity checks for string query 'q' (q empty, parts of 'q' empty - parts of 'q' are separated by ';')
- Fix: error message when updating attribute value for two entities with same id (Issue #1387)
- Hardening: sanity checks for numbers (Issue #1306)
- Fix: bug causing false not-a-number when it really is a valid number (very very rarely)
- Add: type param for GET entity in v2 (Issue #915, #972, #990, #998)
- Add: type param for DELETE entity in v2 (Issue #986, #994)