Hackage release 0.9.10

Changes since previous release:

* Type classes now implemented as dependent records, meaning that method
  types may now depend on earlier methods.
* More flexible class instance resolution, so that function types and lambda
  expressions can be made instances of a type class.
* Add !expr notation for implicit binding of intermediate results in
  monadic/do/etc expressions.
* Extend Effects package to cope with possibly failing operations, using
  "if_valid", "if_error", etc.
* At the REPL, "it" now refers to the previous expression.
* Semantic colouring at the REPL. Turn this off with --nocolour.
* Some prettifying of error messages.
* The contents of ~/.idris/repl/init are run at REPL start-up.
* The REPL stores a command history in ~/.idris/repl/history.
* The [a..b], [a,b..c], [a..], and [a,b..] syntax now pass the totality
  checker and can thus be used in types. The [x..] syntax now returns an
  actually infinite stream.
* Add '%reflection' option for functions, for compile-time operations on
  syntax.
* Add expression form 'quoteGoal x by p in e' which applies p to the expected
  expression type and binds the result to x in the scope e.
* Performance improvements in Strings library.
* Library reorganisation, separated into prelude/ and base/.

Internal changes

* New module/dependency tree checking.
* New parser implementation with more precise errors.
* Improved type class resolution.
* Compiling Nat via GMP integers.
* Performance improvements in elaboration.
* Improvements in termination checking.
* Various REPL commands to support interactive editing, and a client/server
  mode to allow external invocation of REPL commands.