@brief return whether value is a floating-point number @sa https://json.nlohmann.me/api/basic_json/is_number_float/

@brief return whether value is an integer number @sa https://json.nlohmann.me/api/basic_json/is_number_integer/

set iterator to a defined beginning

return 1 if the sum is valid, 0 on overflow. negative terms are considered invalid.

! @brief unget current character (read it again on next get) We implement unget by setting variable next_unget to true. The input is not

@brief access specified array element with bounds checking @sa https://json.nlohmann.me/api/basic_json/at/

@brief return flattened JSON value @sa https://json.nlohmann.me/api/basic_json/flatten/

! * @brief convert a byte to a uppercase hex representation * @param[in] byte byte to represent * @return representation ("00".."FF")

return whether the iterator is at end

@brief return whether value is an unsigned integer number @sa https://json.nlohmann.me/api/basic_json/is_number_unsigned/

! @brief determine system byte order @return true if and only if system's byte order is little endian @note from https://stackoverflow.com/a/1001328

! @brief post-increment (it++) @pre The iterator is initialized; i.e. `m_object != nullptr`. */

! @brief post-decrement (it--) @pre The iterator is initialized; i.e. `m_object != nullptr`. */

@brief remove last reference token @sa https://json.nlohmann.me/api/json_pointer/pop_back/

reset token_buffer; current character is beginning of token

@brief returns the number of elements @sa https://json.nlohmann.me/api/basic_json/size/

returns 1 if the sum of two signed ints is valid (between -2^31 and 2^31-1 inclusive), 0 on overflow.

adds an extra all-255 alpha channel dest == src is legal img_n must be 1 or 3

create the png data from post-deflated data

this function is designed to support animated gifs, although stb_image doesn't support it two back is the image from two frames ago, used for a very s