temporary fork of saphyr with serde support merged into main.

Hendrik Sollich 32214e92bf Raise minimum rustc version to 1.28 (Fixes CI) ... Known minimum version to build [regex](https://crates.io/crates/regex). Old enough as it is, we're not c++ here!		2019-07-24 18:37:03 +02:00
saphyr	Raise minimum rustc version to 1.28 (Fixes CI)	2019-07-24 18:37:03 +02:00