Merge branch 'development' into fix/instant/signature-denied

* development: (914 commits)
  Unfix compiler version except for top level contracts
  Move OrderValidator to extensions
  Update CHANGELOG
  Remove assembly version of matchOrders
  Add getOrderInfo check before calling fillOrder
  Update comments and hard code function selector constants
  Fix build after rebase
  update comments
  Fix build and add back tests
  Update dependency paths
  Add OrderMatcher tests
  feat: Add OrderMatcher contract that takes spread in multiple assets by calling `matchOrders` followed by `fillOrder`
  Update CHANGELOG
  Use more efficient equality checks
  Add note about input validation
  Use more efficient check for overflow
  Check if amount == 0 before doing division
  Reapply prettier
  New relayers
  feat(sra_client.py): Test deployed pkg via tox
  ...

1 files changed, 231 insertions, 0 deletions

diff --git a/packages/website/ts/@next/pages/about/jobs.tsx b/packages/website/ts/@next/pages/about/jobs.tsx
new file mode 100644
index 000000000..2fd2c7619
--- /dev/null
+++ b/packages/website/ts/@next/pages/about/jobs.tsx
@@ -0,0 +1,231 @@
+import * as _ from 'lodash';
+import * as React from 'react';
+import DocumentTitle from 'react-document-title';
+import styled from 'styled-components';
+
+import { AboutPageLayout } from 'ts/@next/components/aboutPageLayout';
+import { Column, FlexWrap, Section } from 'ts/@next/components/newLayout';
+import { Heading, Paragraph } from 'ts/@next/components/text';
+import { WebsiteBackendJobInfo } from 'ts/types';
+import { backendClient } from 'ts/utils/backend_client';
+import { constants } from 'ts/utils/constants';
+
+const OPEN_POSITIONS_HASH = 'positions';
+
+interface PositionProps {
+    title: string;
+    location: string;
+    href: string;
+}
+
+interface PositionItemProps {
+    position: PositionProps;
+}
+
+const Position: React.FunctionComponent<PositionItemProps> = (props: PositionItemProps) => {
+    const { position } = props;
+    return (
+        <PositionWrap>
+            <StyledColumn width="30%">
+                <Heading asElement="h3" size="small" fontWeight="400" marginBottom="0">
+                    <a href={position.href} target="_blank">
+                        {position.title}
+                    </a>
+                </Heading>
+            </StyledColumn>
+
+            <StyledColumn width="50%" padding="0 40px 0 0">
+                <Paragraph isMuted={true} marginBottom="0">
+                    {position.location}
+                </Paragraph>
+            </StyledColumn>
+
+            <StyledColumn width="20%">
+                <Paragraph marginBottom="0" textAlign="right">
+                    <a href={position.href} target="_blank">
+                        Apply
+                    </a>
+                </Paragraph>
+            </StyledColumn>
+        </PositionWrap>
+    );
+};
+
+export interface NextAboutJobsProps {}
+interface NextAboutJobsState {
+    jobInfos: WebsiteBackendJobInfo[];
+}
+
+export class NextAboutJobs extends React.Component<NextAboutJobsProps, NextAboutJobsState> {
+    private _isUnmounted: boolean;
+    private static _convertJobInfoToPositionProps(jobInfo: WebsiteBackendJobInfo): PositionProps {
+        return {
+            title: jobInfo.title,
+            location: jobInfo.office,
+            href: jobInfo.url,
+        };
+    }
+    constructor(props: NextAboutJobsProps) {
+        super(props);
+        this.state = {
+            jobInfos: [],
+        };
+    }
+
+    public componentWillMount(): void {
+        // tslint:disable-next-line:no-floating-promises
+        this._fetchJobInfosAsync();
+    }
+    public componentWillUnmount(): void {
+        this._isUnmounted = true;
+    }
+    public render(): React.ReactNode {
+        const positions = this.state.jobInfos.map(jobInfo => NextAboutJobs._convertJobInfoToPositionProps(jobInfo));
+        return (
+            <AboutPageLayout
+                title="Join Us in Our Mission"
+                description={
+                    <>
+                        <Paragraph size="medium">
+                            To create a tokenized world where all value can flow freely.
+                        </Paragraph>
+                        <Paragraph size="medium">
+                            We are growing an ecosystem of businesses and projects by solving difficult challenges to
+                            make our technology intuitive, flexible, and accessible to all. Join us in building
+                            infrastructure upon which the exchange of all assets will take place.
+                        </Paragraph>
+                    </>
+                }
+                linkLabel="Our mission and values"
+                href={constants.URL_MISSION_AND_VALUES_BLOG_POST}
+            >
+                <DocumentTitle title="Jobs at 0x" />
+                <Section bgColor="#F3F6F4" isFlex={true} maxWidth="1170px" wrapWidth="100%">
+                    <Column maxWidth="442px">
+                        <Heading size="medium" marginBottom="30px">
+                            Powered by a Diverse, Global Community
+                        </Heading>
+
+                        <Paragraph>
+                            We're a highly technical team with varied backgrounds in engineering, science, business,
+                            finance, and research. While the Core Team is headquartered in San Francisco, there are 30+
+                            teams building on 0x and hundreds of thousands of participants behind our efforts worldwide.
+                            We're passionate about open-source software and decentralized technology's potential to act
+                            as an equalizing force in the world.
+                        </Paragraph>
+                    </Column>
+
+                    <Column maxWidth="600px">
+                        <ImageWrap>
+                            <img src="/images/@next/jobs/map@2x.png" height="365" alt="Map of community" />
+                        </ImageWrap>
+                    </Column>
+                </Section>
+
+                <Section isFlex={true} maxWidth="1170px" wrapWidth="100%">
+                    <Column>
+                        <Heading size="medium">Benefits</Heading>
+                    </Column>
+
+                    <Column maxWidth="826px">
+                        <BenefitsList>
+                            <li>Comprehensive Insurance</li>
+                            <li>Unlimited Vacation</li>
+                            <li>Meals and snacks provided daily</li>
+                            <li>Flexible hours and liberal work-from-home-policy</li>
+                            <li>Supportive of remote working</li>
+                            <li>Transportation, phone, and wellness expense</li>
+                            <li>Relocation assistance</li>
+                            <li>Optional team excursions</li>
+                            <li>Competitive salary</li>
+                            <li>Cryptocurrency based compensation</li>
+                        </BenefitsList>
+                    </Column>
+                </Section>
+
+                <Section id={OPEN_POSITIONS_HASH} isFlex={true} maxWidth="1170px" wrapWidth="100%">
+                    <Column>
+                        <Heading size="medium">
+                            Current<br />Openings
+                        </Heading>
+                    </Column>
+
+                    <Column maxWidth="826px">
+                        {_.map(positions, (position, index) => (
+                            <Position key={`position-${index}`} position={position} />
+                        ))}
+                    </Column>
+                </Section>
+            </AboutPageLayout>
+        );
+    }
+    private async _fetchJobInfosAsync(): Promise<void> {
+        try {
+            if (!this._isUnmounted) {
+                this.setState({
+                    jobInfos: [],
+                });
+            }
+            const jobInfos = await backendClient.getJobInfosAsync();
+            if (!this._isUnmounted) {
+                this.setState({
+                    jobInfos,
+                });
+            }
+        } catch (error) {
+            if (!this._isUnmounted) {
+                this.setState({
+                    jobInfos: [],
+                });
+            }
+        }
+    }
+}
+
+const BenefitsList = styled.ul`
+    color: #000;
+    font-weight: 300;
+    line-height: 1.444444444;
+    list-style: disc;
+    columns: auto 2;
+    column-gap: 80px;
+
+    li {
+        margin-bottom: 1em;
+    }
+`;
+
+const ImageWrap = styled.figure`
+    @media (min-width: 768px) {
+        height: 600px;
+        padding-left: 60px;
+        display: flex;
+        align-items: flex-end;
+    }
+`;
+
+const StyledColumn = styled(Column)`
+    flex-shrink: 0;
+
+    @media (max-width: 768px) {
+        & + & {
+            margin-top: 15px;
+        }
+    }
+`;
+
+const PositionWrap = styled(FlexWrap)`
+    margin-bottom: 40px;
+    padding-bottom: 30px;
+    position: relative;
+
+    &:after {
+        content: '';
+        width: 100%;
+        position: absolute;
+        bottom: 0;
+        left: 0;
+        height: 1px;
+        background-color: #e3e3e3;
+    }
+`;