Add unsigned long support; addresses issues #39

[dirkx]

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Memory usage change @ e8f2289

Board	flash	%	RAM for global variables	%
arduino:avr:leonardo	🔺 0 - +454	0.0 - +1.58	🔺 0 - +8	0.0 - +0.31
arduino:avr:mega	🔺 0 - +456	0.0 - +0.18	🔺 0 - +10	0.0 - +0.12
arduino:avr:nano	🔺 0 - +456	0.0 - +1.48	🔺 0 - +10	0.0 - +0.49
arduino:avr:yun	🔺 0 - +454	0.0 - +1.58	🔺 0 - +8	0.0 - +0.31
arduino:mbed_edge:edge_control	🔺 0 - +5464	0.0 - +0.56	0 - 0	0.0 - 0.0
arduino:mbed_nano:nano33ble	🔺 0 - +5456	0.0 - +0.56	0 - 0	0.0 - 0.0
arduino:mbed_nano:nanorp2040connect	🔺 0 - +431	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_portenta:envie_m4	🔺 0 - +3856	0.0 - +0.37	0 - 0	0.0 - 0.0
arduino:mbed_portenta:envie_m7	🔺 0 - +3848	0.0 - +0.49	0 - 0	0.0 - 0.0
arduino:megaavr:nona4809	🔺 0 - +455	0.0 - +0.93	0 - 0	0.0 - 0.0
arduino:megaavr:uno2018	🔺 0 - +455	0.0 - +0.94	0 - 0	0.0 - 0.0
arduino:sam:arduino_due_x_dbg	🔺 0 - +7040	0.0 - +1.34	N/A	N/A
arduino:samd:arduino_zero_edbg	🔺 0 - +3308	0.0 - +1.26	0 - 0	0.0 - 0.0
arduino:samd:mkrzero	🔺 0 - +3308	0.0 - +1.26	0 - 0	0.0 - 0.0
arduino:samd:nano_33_iot	🔺 0 - +3308	0.0 - +1.26	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/JSONArray flash	%	examples/JSONArray RAM for global variables	%	examples/JSONKitchenSink flash	%	examples/JSONKitchenSink RAM for global variables	%	examples/JSONObject flash	%	examples/JSONObject RAM for global variables	%
arduino:avr:leonardo	0	0.0	0	0.0	0	0.0	0	0.0	454	1.58	8	0.31
arduino:avr:mega	0	0.0	0	0.0	0	0.0	0	0.0	456	0.18	10	0.12
arduino:avr:nano	0	0.0	0	0.0	0	0.0	0	0.0	456	1.48	10	0.49
arduino:avr:yun	0	0.0	0	0.0	0	0.0	0	0.0	454	1.58	8	0.31
arduino:mbed_edge:edge_control	0	0.0	0	0.0	0	0.0	0	0.0	5464	0.56	0	0.0
arduino:mbed_nano:nano33ble	0	0.0	0	0.0	0	0.0	0	0.0	5456	0.56	0	0.0
arduino:mbed_nano:nanorp2040connect	0	0.0	0	0.0	0	0.0	0	0.0	431	0.0	0	0.0
arduino:mbed_portenta:envie_m4	0	0.0	0	0.0	0	0.0	0	0.0	3856	0.37	0	0.0
arduino:mbed_portenta:envie_m7	0	0.0	0	0.0	0	0.0	0	0.0	3848	0.49	0	0.0
arduino:megaavr:nona4809	0	0.0	0	0.0	0	0.0	0	0.0	455	0.93	0	0.0
arduino:megaavr:uno2018	0	0.0	0	0.0	0	0.0	0	0.0	455	0.94	0	0.0
arduino:sam:arduino_due_x_dbg	0	0.0	N/A	N/A	0	0.0	N/A	N/A	7040	1.34	N/A	N/A
arduino:samd:arduino_zero_edbg	0	0.0	0	0.0	0	0.0	0	0.0	3308	1.26	0	0.0
arduino:samd:mkrzero	0	0.0	0	0.0	0	0.0	0	0.0	3308	1.26	0	0.0
arduino:samd:nano_33_iot	0	0.0	0	0.0	0	0.0	0	0.0	3308	1.26	0	0.0

Click for full report CSV

Board,examples/JSONArray<br>flash,%,examples/JSONArray<br>RAM for global variables,%,examples/JSONKitchenSink<br>flash,%,examples/JSONKitchenSink<br>RAM for global variables,%,examples/JSONObject<br>flash,%,examples/JSONObject<br>RAM for global variables,%
arduino:avr:leonardo,0,0.0,0,0.0,0,0.0,0,0.0,454,1.58,8,0.31
arduino:avr:mega,0,0.0,0,0.0,0,0.0,0,0.0,456,0.18,10,0.12
arduino:avr:nano,0,0.0,0,0.0,0,0.0,0,0.0,456,1.48,10,0.49
arduino:avr:yun,0,0.0,0,0.0,0,0.0,0,0.0,454,1.58,8,0.31
arduino:mbed_edge:edge_control,0,0.0,0,0.0,0,0.0,0,0.0,5464,0.56,0,0.0
arduino:mbed_nano:nano33ble,0,0.0,0,0.0,0,0.0,0,0.0,5456,0.56,0,0.0
arduino:mbed_nano:nanorp2040connect,0,0.0,0,0.0,0,0.0,0,0.0,431,0.0,0,0.0
arduino:mbed_portenta:envie_m4,0,0.0,0,0.0,0,0.0,0,0.0,3856,0.37,0,0.0
arduino:mbed_portenta:envie_m7,0,0.0,0,0.0,0,0.0,0,0.0,3848,0.49,0,0.0
arduino:megaavr:nona4809,0,0.0,0,0.0,0,0.0,0,0.0,455,0.93,0,0.0
arduino:megaavr:uno2018,0,0.0,0,0.0,0,0.0,0,0.0,455,0.94,0,0.0
arduino:sam:arduino_due_x_dbg,0,0.0,N/A,N/A,0,0.0,N/A,N/A,7040,1.34,N/A,N/A
arduino:samd:arduino_zero_edbg,0,0.0,0,0.0,0,0.0,0,0.0,3308,1.26,0,0.0
arduino:samd:mkrzero,0,0.0,0,0.0,0,0.0,0,0.0,3308,1.26,0,0.0
arduino:samd:nano_33_iot,0,0.0,0,0.0,0,0.0,0,0.0,3308,1.26,0,0.0

[aentinger]

LGTM 👍 Thank you @dirkx 🚀