Deleted vendor folder

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diff --git a/vendor/rand_core/src/block.rs b/vendor/rand_core/src/block.rs
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index 7d91263..0000000
--- a/vendor/rand_core/src/block.rs
+++ /dev/null
@@ -1,433 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! The `BlockRngCore` trait and implementation helpers
-//!
-//! The [`BlockRngCore`] trait exists to assist in the implementation of RNGs
-//! which generate a block of data in a cache instead of returning generated
-//! values directly.
-//!
-//! Usage of this trait is optional, but provides two advantages:
-//! implementations only need to concern themselves with generation of the
-//! block, not the various [`RngCore`] methods (especially [`fill_bytes`], where
-//! the optimal implementations are not trivial), and this allows
-//! `ReseedingRng` (see [`rand`](https://docs.rs/rand) crate) perform periodic
-//! reseeding with very low overhead.
-//!
-//! # Example
-//!
-//! ```norun
-//! use rand_core::block::{BlockRngCore, BlockRng};
-//!
-//! struct MyRngCore;
-//!
-//! impl BlockRngCore for MyRngCore {
-//!     type Results = [u32; 16];
-//!
-//!     fn generate(&mut self, results: &mut Self::Results) {
-//!         unimplemented!()
-//!     }
-//! }
-//!
-//! impl SeedableRng for MyRngCore {
-//!     type Seed = unimplemented!();
-//!     fn from_seed(seed: Self::Seed) -> Self {
-//!         unimplemented!()
-//!     }
-//! }
-//!
-//! // optionally, also implement CryptoRng for MyRngCore
-//!
-//! // Final RNG.
-//! type MyRng = BlockRng<u32, MyRngCore>;
-//! ```
-//!
-//! [`BlockRngCore`]: crate::block::BlockRngCore
-//! [`fill_bytes`]: RngCore::fill_bytes
-
-use core::convert::AsRef;
-use core::{fmt, ptr};
-use {RngCore, CryptoRng, SeedableRng, Error};
-use impls::{fill_via_u32_chunks, fill_via_u64_chunks};
-
-/// A trait for RNGs which do not generate random numbers individually, but in
-/// blocks (typically `[u32; N]`). This technique is commonly used by
-/// cryptographic RNGs to improve performance.
-///
-/// See the [module][crate::block] documentation for details.
-pub trait BlockRngCore {
-    /// Results element type, e.g. `u32`.
-    type Item;
-
-    /// Results type. This is the 'block' an RNG implementing `BlockRngCore`
-    /// generates, which will usually be an array like `[u32; 16]`.
-    type Results: AsRef<[Self::Item]> + AsMut<[Self::Item]> + Default;
-
-    /// Generate a new block of results.
-    fn generate(&mut self, results: &mut Self::Results);
-}
-
-
-/// A wrapper type implementing [`RngCore`] for some type implementing
-/// [`BlockRngCore`] with `u32` array buffer; i.e. this can be used to implement
-/// a full RNG from just a `generate` function.
-///
-/// The `core` field may be accessed directly but the results buffer may not.
-/// PRNG implementations can simply use a type alias
-/// (`pub type MyRng = BlockRng<MyRngCore>;`) but might prefer to use a
-/// wrapper type (`pub struct MyRng(BlockRng<MyRngCore>);`); the latter must
-/// re-implement `RngCore` but hides the implementation details and allows
-/// extra functionality to be defined on the RNG
-/// (e.g. `impl MyRng { fn set_stream(...){...} }`).
-///
-/// `BlockRng` has heavily optimized implementations of the [`RngCore`] methods
-/// reading values from the results buffer, as well as
-/// calling [`BlockRngCore::generate`] directly on the output array when
-/// [`fill_bytes`] / [`try_fill_bytes`] is called on a large array. These methods
-/// also handle the bookkeeping of when to generate a new batch of values.
-///
-/// No whole generated `u32` values are thown away and all values are consumed
-/// in-order. [`next_u32`] simply takes the next available `u32` value.
-/// [`next_u64`] is implemented by combining two `u32` values, least
-/// significant first. [`fill_bytes`] and [`try_fill_bytes`] consume a whole
-/// number of `u32` values, converting each `u32` to a byte slice in
-/// little-endian order. If the requested byte length is not a multiple of 4,
-/// some bytes will be discarded.
-///
-/// See also [`BlockRng64`] which uses `u64` array buffers. Currently there is
-/// no direct support for other buffer types.
-///
-/// For easy initialization `BlockRng` also implements [`SeedableRng`].
-///
-/// [`next_u32`]: RngCore::next_u32
-/// [`next_u64`]: RngCore::next_u64
-/// [`fill_bytes`]: RngCore::fill_bytes
-/// [`try_fill_bytes`]: RngCore::try_fill_bytes
-#[derive(Clone)]
-#[cfg_attr(feature="serde1", derive(Serialize, Deserialize))]
-pub struct BlockRng<R: BlockRngCore + ?Sized> {
-    results: R::Results,
-    index: usize,
-    /// The *core* part of the RNG, implementing the `generate` function.
-    pub core: R,
-}
-
-// Custom Debug implementation that does not expose the contents of `results`.
-impl<R: BlockRngCore + fmt::Debug> fmt::Debug for BlockRng<R> {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_struct("BlockRng")
-           .field("core", &self.core)
-           .field("result_len", &self.results.as_ref().len())
-           .field("index", &self.index)
-           .finish()
-    }
-}
-
-impl<R: BlockRngCore> BlockRng<R> {
-    /// Create a new `BlockRng` from an existing RNG implementing
-    /// `BlockRngCore`. Results will be generated on first use.
-    #[inline]
-    pub fn new(core: R) -> BlockRng<R>{
-        let results_empty = R::Results::default();
-        BlockRng {
-            core,
-            index: results_empty.as_ref().len(),
-            results: results_empty,
-        }
-    }
-
-    /// Get the index into the result buffer.
-    ///
-    /// If this is equal to or larger than the size of the result buffer then
-    /// the buffer is "empty" and `generate()` must be called to produce new
-    /// results.
-    #[inline(always)]
-    pub fn index(&self) -> usize {
-        self.index
-    }
-
-    /// Reset the number of available results.
-    /// This will force a new set of results to be generated on next use.
-    #[inline]
-    pub fn reset(&mut self) {
-        self.index = self.results.as_ref().len();
-    }
-
-    /// Generate a new set of results immediately, setting the index to the
-    /// given value.
-    #[inline]
-    pub fn generate_and_set(&mut self, index: usize) {
-        assert!(index < self.results.as_ref().len());
-        self.core.generate(&mut self.results);
-        self.index = index;
-    }
-}
-
-impl<R: BlockRngCore<Item=u32>> RngCore for BlockRng<R>
-where <R as BlockRngCore>::Results: AsRef<[u32]> + AsMut<[u32]>
-{
-    #[inline]
-    fn next_u32(&mut self) -> u32 {
-        if self.index >= self.results.as_ref().len() {
-            self.generate_and_set(0);
-        }
-
-        let value = self.results.as_ref()[self.index];
-        self.index += 1;
-        value
-    }
-
-    #[inline]
-    fn next_u64(&mut self) -> u64 {
-        let read_u64 = |results: &[u32], index| {
-            if cfg!(any(target_endian = "little")) {
-                // requires little-endian CPU
-                let ptr: *const u64 = results[index..index+2].as_ptr() as *const u64;
-                unsafe { ptr::read_unaligned(ptr) }
-            } else {
-                let x = u64::from(results[index]);
-                let y = u64::from(results[index + 1]);
-                (y << 32) | x
-            }
-        };
-
-        let len = self.results.as_ref().len();
-
-        let index = self.index;
-        if index < len-1 {
-            self.index += 2;
-            // Read an u64 from the current index
-            read_u64(self.results.as_ref(), index)
-        } else if index >= len {
-            self.generate_and_set(2);
-            read_u64(self.results.as_ref(), 0)
-        } else {
-            let x = u64::from(self.results.as_ref()[len-1]);
-            self.generate_and_set(1);
-            let y = u64::from(self.results.as_ref()[0]);
-            (y << 32) | x
-        }
-    }
-
-    #[inline]
-    fn fill_bytes(&mut self, dest: &mut [u8]) {
-        let mut read_len = 0;
-        while read_len < dest.len() {
-            if self.index >= self.results.as_ref().len() {
-                self.generate_and_set(0);
-            }
-            let (consumed_u32, filled_u8) =
-                fill_via_u32_chunks(&self.results.as_ref()[self.index..],
-                                    &mut dest[read_len..]);
-
-            self.index += consumed_u32;
-            read_len += filled_u8;
-        }
-    }
-
-    #[inline(always)]
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error> {
-        Ok(self.fill_bytes(dest))
-    }
-}
-
-impl<R: BlockRngCore + SeedableRng> SeedableRng for BlockRng<R> {
-    type Seed = R::Seed;
-
-    #[inline(always)]
-    fn from_seed(seed: Self::Seed) -> Self {
-        Self::new(R::from_seed(seed))
-    }
-
-    #[inline(always)]
-    fn seed_from_u64(seed: u64) -> Self {
-        Self::new(R::seed_from_u64(seed))
-    }
-
-    #[inline(always)]
-    fn from_rng<S: RngCore>(rng: S) -> Result<Self, Error> {
-        Ok(Self::new(R::from_rng(rng)?))
-    }
-}
-
-
-
-/// A wrapper type implementing [`RngCore`] for some type implementing
-/// [`BlockRngCore`] with `u64` array buffer; i.e. this can be used to implement
-/// a full RNG from just a `generate` function.
-///
-/// This is similar to [`BlockRng`], but specialized for algorithms that operate
-/// on `u64` values.
-///
-/// No whole generated `u64` values are thrown away and all values are consumed
-/// in-order. [`next_u64`] simply takes the next available `u64` value.
-/// [`next_u32`] is however a bit special: half of a `u64` is consumed, leaving
-/// the other half in the buffer. If the next function called is [`next_u32`]
-/// then the other half is then consumed, however both [`next_u64`] and
-/// [`fill_bytes`] discard the rest of any half-consumed `u64`s when called.
-///
-/// [`fill_bytes`] and [`try_fill_bytes`] consume a whole number of `u64`
-/// values. If the requested length is not a multiple of 8, some bytes will be
-/// discarded.
-///
-/// [`next_u32`]: RngCore::next_u32
-/// [`next_u64`]: RngCore::next_u64
-/// [`fill_bytes`]: RngCore::fill_bytes
-/// [`try_fill_bytes`]: RngCore::try_fill_bytes
-#[derive(Clone)]
-#[cfg_attr(feature="serde1", derive(Serialize, Deserialize))]
-pub struct BlockRng64<R: BlockRngCore + ?Sized> {
-    results: R::Results,
-    index: usize,
-    half_used: bool, // true if only half of the previous result is used
-    /// The *core* part of the RNG, implementing the `generate` function.
-    pub core: R,
-}
-
-// Custom Debug implementation that does not expose the contents of `results`.
-impl<R: BlockRngCore + fmt::Debug> fmt::Debug for BlockRng64<R> {
-    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_struct("BlockRng64")
-           .field("core", &self.core)
-           .field("result_len", &self.results.as_ref().len())
-           .field("index", &self.index)
-           .field("half_used", &self.half_used)
-           .finish()
-    }
-}
-
-impl<R: BlockRngCore> BlockRng64<R> {
-    /// Create a new `BlockRng` from an existing RNG implementing
-    /// `BlockRngCore`. Results will be generated on first use.
-    #[inline]
-    pub fn new(core: R) -> BlockRng64<R>{
-        let results_empty = R::Results::default();
-        BlockRng64 {
-            core,
-            index: results_empty.as_ref().len(),
-            half_used: false,
-            results: results_empty,
-        }
-    }
-
-    /// Get the index into the result buffer.
-    ///
-    /// If this is equal to or larger than the size of the result buffer then
-    /// the buffer is "empty" and `generate()` must be called to produce new
-    /// results.
-    #[inline(always)]
-    pub fn index(&self) -> usize {
-        self.index
-    }
-
-    /// Reset the number of available results.
-    /// This will force a new set of results to be generated on next use.
-    #[inline]
-    pub fn reset(&mut self) {
-        self.index = self.results.as_ref().len();
-        self.half_used = false;
-    }
-
-    /// Generate a new set of results immediately, setting the index to the
-    /// given value.
-    #[inline]
-    pub fn generate_and_set(&mut self, index: usize) {
-        assert!(index < self.results.as_ref().len());
-        self.core.generate(&mut self.results);
-        self.index = index;
-        self.half_used = false;
-    }
-}
-
-impl<R: BlockRngCore<Item=u64>> RngCore for BlockRng64<R>
-where <R as BlockRngCore>::Results: AsRef<[u64]> + AsMut<[u64]>
-{
-    #[inline]
-    fn next_u32(&mut self) -> u32 {
-        let mut index = self.index * 2 - self.half_used as usize;
-        if index >= self.results.as_ref().len() * 2 {
-            self.core.generate(&mut self.results);
-            self.index = 0;
-            // `self.half_used` is by definition `false`
-            self.half_used = false;
-            index = 0;
-        }
-
-        self.half_used = !self.half_used;
-        self.index += self.half_used as usize;
-
-        // Index as if this is a u32 slice.
-        unsafe {
-            let results =
-                &*(self.results.as_ref() as *const [u64] as *const [u32]);
-            if cfg!(target_endian = "little") {
-                *results.get_unchecked(index)
-            } else {
-                *results.get_unchecked(index ^ 1)
-            }
-        }
-    }
-
-    #[inline]
-    fn next_u64(&mut self) -> u64 {
-        if self.index >= self.results.as_ref().len() {
-            self.core.generate(&mut self.results);
-            self.index = 0;
-        }
-
-        let value = self.results.as_ref()[self.index];
-        self.index += 1;
-        self.half_used = false;
-        value
-    }
-
-    #[inline]
-    fn fill_bytes(&mut self, dest: &mut [u8]) {
-        let mut read_len = 0;
-        self.half_used = false;
-        while read_len < dest.len() {
-            if self.index as usize >= self.results.as_ref().len() {
-                self.core.generate(&mut self.results);
-                self.index = 0;
-            }
-
-            let (consumed_u64, filled_u8) =
-                fill_via_u64_chunks(&self.results.as_ref()[self.index as usize..],
-                                    &mut dest[read_len..]);
-
-            self.index += consumed_u64;
-            read_len += filled_u8;
-        }
-    }
-
-    #[inline(always)]
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error> {
-        Ok(self.fill_bytes(dest))
-    }
-}
-
-impl<R: BlockRngCore + SeedableRng> SeedableRng for BlockRng64<R> {
-    type Seed = R::Seed;
-
-    #[inline(always)]
-    fn from_seed(seed: Self::Seed) -> Self {
-        Self::new(R::from_seed(seed))
-    }
-
-    #[inline(always)]
-    fn seed_from_u64(seed: u64) -> Self {
-        Self::new(R::seed_from_u64(seed))
-    }
-
-    #[inline(always)]
-    fn from_rng<S: RngCore>(rng: S) -> Result<Self, Error> {
-        Ok(Self::new(R::from_rng(rng)?))
-    }
-}
-
-impl<R: BlockRngCore + CryptoRng> CryptoRng for BlockRng<R> {}