release tyre.1.0

[EmileTrotignon]

@Drup has tasked me with further developing this package.

The changelog is as follows:

• Introduce charsets: contrary to Re, they have a different type from regex.
• Type the difference between regexps that can be evaluated reversed and the
  ones that cannot: (evaluable, 'a) Tyre.t and (non_evaluable, 'a) Tyre.t.
• Introduce alias type pattern for (non_evaluable, 'a) Tyre.t.
• Introduce val lift : ('a -> string) -> 'a pattern -> ('e, 'a) t to transform
  a pattern into an expression by giving an explicit conversion function.
  Also liftpp that does the same with better performance by using Format.
• Introduce val unlift : (evaluable, 'a) t -> 'a pattern.
• Introduce val either: ('e, 'a) Tyre.t -> ('e, 'b) Tyre.t -> ('e, ('a, 'b) Either.t) Tyre.t.
• Change the type of alt to (_, 'a) t -> (_, 'a) t -> 'a pattern. Previous
  users of alt should switch to either.
• Introduce val alt_eval: ('a -> [`Left | `Right]) -> ('e, 'a) t -> ('e, 'a) t -> ('e, 'a) t
  This has flat typing but is compatible with eval.
• Operators: <|> is alt, <||> is either.
• Introduce val map : ('a -> 'b) -> (_, 'a) t -> 'b pattern and its
  corresponding operators: let+ and <$>.
• Introduce (and+) which is an alias of seq.
• Introduce val app: ('e, 'a -> 'b) t -> ('e, 'a) t -> 'b pattern and its
  corresponding operator <*>
• Introduce val matched_string : (_, 'a) t -> (_, string) t that discards the
  computed value and just return the string that was matched.
• Drop dependency on Result library. Stdlib is now used.
• Introduce val rep_charset: Charset.t -> (_, string) t, and shortcut
  val rep_any: (_, string) t.

I introduce version 1.0 mainly because of the large breaking change of typing around alt and either.

[shonfeder]

There are a variety of failing CI tests here. Could you have a look? LMK if you have questions on any points!

(lint) (failed)

Warning in tyre.1.0: Unnecessary field 'name'. It is suggested to remove it.
Warning in tyre.1.0: Dubious use of 'dune subst'. 'dune subst' should always only be called with {dev} (i.e. ["dune" "subst"] {dev}) If your opam file has been autogenerated by dune, you need to upgrade your dune-project to at least (lang dune 2.7).

compilers

4.08
tyre.1.0 (failed: Unbound module Either)
4.09
tyre.1.0 (failed: Unbound module Either)
4.10
tyre.1.0 (failed: Unbound module Either)
4.11
tyre.1.0 (failed: Unbound module Either)
4.12
tyre.1.0
lower-bounds (failed: Unbound module Re.Seq)
4.13
tyre.1.0
lower-bounds (failed: Unbound module Re.Seq)
4.14
tyre.1.0
lower-bounds (failed: Unbound module Re.Seq)
revdeps
syslog-rfc5424.0.1 (failed: The type constructor Tyre.t expects 2 argument(s),)
5.4
tyre.1.0
revdeps
syslog-rfc5424.0.1 (failed: The type constructor Tyre.t expects 2 argument(s),)
vif.0.0.1~beta1 (failed: The type constructor Tyre.t expects 2 argument(s),)