Changes:

• Update minimum toolchain to 1.63
• Remove thiserror dependency
• Gracefully handle unsupported capabilities in clear and read operations

Changes:

• Add CAPGET and CAPSET for LoongArch64

Changes:

• Remove dependency on errno crate in favor of std functions

Changes:

• lib: added support for serde
• cargo: added serde_support feature

Changes:

• lib: fix bounding drop error message

Changes:

• nr: fix syscall definitions for x86_64-unknown-linux-gnux32.
• ci: move Travis jobs to GH actions

Changes:

• examples: show how to introspect all capabilities
• nr: add CAP_CHECKPOINT_RESTORE

Changes:

• lib: switch 'set' to borrow its argument
• errors: switch to thiserror
• ci: test on multiple architectures
• cargo: switch to edition 2018
• runtime: support procfs cap_last_cap
• caps: mark enum as non-exhaustive
• ci: bump toolchains
• caps: fix warnings
• caps: gracefully support older kernel versions
• nr: add CAP_PERFMON and CAP_BPF