Release Apollo 1.0.4

[mossmann]

Tasks not yet associated with an Issue or Pull Request

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1. Check if we need Apollo to differentiate between Saturn-V 1.0 and Apollo firmware
2. Rename master branch to main

Issues

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1. WCID descriptors #42
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2. PROGRAM button doesn't toggle USB switch #38
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3. Update LED usage #39
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4. no way for host to detect firmware version #43
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5. Apollo says it is connected to "LUNA" when it is connected to a Cynthion. #52
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6. Decide what Apollo (and other gateware) will do on older Cynthion revisions #26
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7. Undeclared dependency on prompt_toolkit #35
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Review, merge or close outstanding pull requests

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1. firmware: Add support for hardware revision detection #32
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2. Add support for Raspberry Pi Pico RP2040 board #34
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3. firmware: add WCID descriptors #48
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4. Add support for one-way FPGA advertisement pin #22
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5. Support static bitmasks as LED patterns #23
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6. firmware: Use Base32 for the serial number in SAMD11/SAMD21 boards #37
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7. apollo_fpga: get rid of poetry and add prompt-toolkit dependency #36
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