update copyright info

update license to GPLv2 and GPLv3

Separate debug defines for every module

pico_tree_insert: check return value and free memory if needed

Issue #387: Added some more checking/freeing stuff/todos

[pico_protocol] - Added 'device'-param to pico_protocol's alloc-function. This to alloc frames with overhead based on link layer and device's overhead-field. Should fix #405 and #376

Issue #387: Check return value of pico_timer_add() and pico_timer_add_hashed()

Coverity IDs 65649/65650/65651: Check pointers for NULL before
dereferencing them

fixing pico_tree_insert return value checking (issue #380)

[IGMP] - Fixed accessing members of pico_address when debugging

#383 fixed heap-use-after free + send correct message type on leave

igmp fix potential memory leak (coverity scan)

Make local variables static

detected using -Wmissing-variable-declarations clang option

Enforced style via uncrustify

clean up trailing whitespace (fixes #324)

Prevent undo of state reset

Prevented a deadlock when switching compatibility mode

Removed duplicated code

q

Cleanup of code

Introduced mcast module

Fixed invalid return value

Fixed heap-use after free violation

Improved C89 compatability (e.g. Watcom compiler)

Added protection #ifdef PICO_SUPPORT_xxx

Functional test

Updated Copyright information.

Coding style enforced.

Respond to IGMP3 membership query. Should close #181

IGMP3: Avoid division by 0 when receiving a status report with
max_response_time == 0

IGMPv3 query messages can have an octet length of 12 or greater.

Enforced coding style via uncrustify

Refactored IP address comparison into one centralized function

Reduced cyclomatic complexity of modules/pico_igmp.c

Added array size [0] to structs in igmp module

Changed gcc's attribute packet to enable compatibility with IAR

Fixed more minor coding standard violations

'make style' adjusted formatting

Fixed argument check in igmp.c

* changed pico_free into PICO_FREE
* changed pico_zalloc into PICO_ZALLOC

Added uncrustify. Enforced some coding rules. Added "make style" target.

Promoted pico_tick to uint64, created pico_time to diff the time variables

Bug #58. Replaced 0 sized arrays with flexible arrays.

Issue #17. Fixed warnings (part three)

Issue #17. Fixed warnings (part one)

Issue #17. Fixed -Wmissing-field-initializers

Issue #17. Fixed all -Wunused-parameter, except dhcp,

Task #549 delete all running timers when switching to IGMPv2 compatibility mode

Task #549 completed overhaul of IGMPv2 with IGMPv3 compatibility

Revert "Task #549 new timer implementation + check on compatibility mode"

This reverts commit 7f093885f33c62d1d359df573395deeef67ff6fd.

Task #549 new timer implementation + check on compatibility mode

Task #549 implemented IGMPv3 report messages

Task #549 refactoring of create_igmp_frame function and usage (wip)

Task #549 IGMPv3 struct consolidation and refactoring

Task #549 IGMPv3 API refactoring

Task #549 IGMP refactoring of header file + addition of v3 structs

Task #549 added socket options PICO_IP_ADD_SOURCE_MEMBERSHIP and PICO_IP_DROP_SOURCE_MEMBERSHIP

Task #549 rename module IGMP2 to IGMP