Bump flask from 1.0.2 to 1.0.3

Bumps flask from 1.0.2 to 1.0.3.

Changelog

*Sourced from [flask's changelog](https://github.com/pallets/flask/blob/master/CHANGES.rst).* > Version 1.0.3 > ============= > > Released 2019-05-17 > > - send\_file encodes filenames as ASCII instead of Latin-1 (ISO-8859-1). This fixes compatibility with Gunicorn, which is stricter about header encodings than PEP 3333. ([\#2766](https://github-redirect.dependabot.com/pallets/flask/issues/2766)) > - Allow custom CLIs using `FlaskGroup` to set the debug flag without it always being overwritten based on environment variables. ([\#2765](https://github-redirect.dependabot.com/pallets/flask/pull/2765)) > - `flask --version` outputs Werkzeug's version and simplifies the Python version. ([\#2825](https://github-redirect.dependabot.com/pallets/flask/pull/2825)) > - send\_file handles an `attachment_filename` that is a native Python 2 string (bytes) with UTF-8 coded bytes. ([\#2933](https://github-redirect.dependabot.com/pallets/flask/issues/2933)) > - A catch-all error handler registered for `HTTPException` will not handle `RoutingException`, which is used internally during routing. This fixes the unexpected behavior that had been introduced in 1.0. ([\#2986](https://github-redirect.dependabot.com/pallets/flask/pull/2986)) > - Passing the `json` argument to `app.test_client` does not push/pop an extra app context. ([\#2900](https://github-redirect.dependabot.com/pallets/flask/issues/2900))

Commits

- [`99660cc`](https://github.com/pallets/flask/commit/99660cc40984015cbbcd27d1cdc19376b2536443) release version 1.0.3 - [`3dc84ec`](https://github.com/pallets/flask/commit/3dc84ec4609de0c08fd159ebe991453309952fa8) Merge pull request [#3206](https://github-redirect.dependabot.com/pallets/flask/issues/3206) from pallets/test-client-json - [`a4f0f19`](https://github.com/pallets/flask/commit/a4f0f197962b27a002c45f5e27b13a8d4a27ee63) don't push app context for test client json - [`f2c8540`](https://github.com/pallets/flask/commit/f2c854060adf021347a6c4217fdb06a77a38bf58) Merge pull request [#3169](https://github-redirect.dependabot.com/pallets/flask/issues/3169) from DamianSkrzypczak/3168-improve-warning-about-dev... - [`e2f4b53`](https://github.com/pallets/flask/commit/e2f4b53396f4676978f86492dae5d3952446df89) Fix dev-server warning message readability ([#3168](https://github-redirect.dependabot.com/pallets/flask/issues/3168)) - [`ab3f922`](https://github.com/pallets/flask/commit/ab3f92253388df031d2947a5a76c980cba7cb694) Merge pull request [#3154](https://github-redirect.dependabot.com/pallets/flask/issues/3154) from brunoais/more-explicit-session-transaction - [`6142aa6`](https://github.com/pallets/flask/commit/6142aa64ae4d0957d735b6b86c5abe15fea06504) More explicit explanation: session testing - [`55801b5`](https://github.com/pallets/flask/commit/55801b5653bd5c290b10731c80bc15456e261217) Merge pull request [#3166](https://github-redirect.dependabot.com/pallets/flask/issues/3166) from mekarpeles/refactor/unused-url_join - [`ac78da0`](https://github.com/pallets/flask/commit/ac78da0bb02fc5c07c896a77d3fc2b32e7924407) removed unused reference to url_join - [`814a7ea`](https://github.com/pallets/flask/commit/814a7ea96f1f0aa124537cee98fed0955ebbf6c4) Merge pull request [#3204](https://github-redirect.dependabot.com/pallets/flask/issues/3204) from pallets/azure - Additional commits viewable in [compare view](https://github.com/pallets/flask/compare/1.0.2...1.0.3)

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SpamExperts / pyzor

Bump flask from 1.0.2 to 1.0.3 #79