Log Message:
time/rsclock: update to 0.1.10

v0.1.10
What's Changed
 - Added -o (print once) flag, fix Cargo.toml categories flag
   by @Kyllingene in #18

v0.1.9
What's Changed
 - Use u8::wrapping_* instead of *_u8, add gitignore by @Kyllingene in #15
 - 12-hour clock modes by @Kyllingene in #16

v0.1.8 - no release