General purpose utility functions aimed at portability, used by Concord.

• cog_load_whole_file_fp() - Load file contents into a string (provide a FILE*)
• cog_load_whole_file() - Load file contents into a string

• cog_timezone() - Get your local timezone (difference between UTC and local time in seconds)
• cog_sleep_ms() - Sleep for milliseconds amount
• cog_sleep_us() - Sleep for microseconds amount
• cog_timestamp_ms() - Get the current timestamp in milliseconds
• cog_timestamp_us() - Get the current timestamp in microseconds

• cog_iso8601_to_unix_ms() - Convert a iso8601 string to unix timestamp (milliseconds)
• cog_unix_ms_to_iso8601() - Convert a unix timestamp (milliseconds) to a iso8601 string
• cog_strtou64() - Convert a numerical string to uint64_t
• cog_u64tostr() - Convert uint64_t to a numerical string

• cog_strndup() - analogous to strndup()
• cog_asprintf() - analogous to asprintf()

This software is distributed under MIT license, so feel free to integrate it in your commercial products.